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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Description of Program Activities</FormAndLineReferenceDesc>
        <ExplanationTxt>The USTA National Tennis Center, Inc ("NTC") provides recreational and civic facilities for the general public at the USTA Billie Jean King National Tennis Center. On December 22, 1993 the NTC and the City of New York entered into a long-term lease for 46 acres of New York City park land in Flushing Meadows Corona Park in Flushing New York. The lease, including renewal options, is for 99 years. The USTA Billie Jean King National Tennis Center consists of Arthur Ashe Stadium, Louis Armstrong Stadium, Grandstand Court, the indoor tennis facility with 12 courts, players' locker rooms and lounge, restaurants, a pro shop, offices and 20 outdoor courts. All operating and maintenance expenses of the facility are borne by the NTC. As described more fully below, the NTC operates programs at the facility year-round. Throughout the years NTC has made capital improvements to the facility including the indoor tennis facility with 12 indoor courts as well as the reconstruction of all 26 outdoor courts which further helps providing recreational and civic facilities for the general public. Beginning in 2014, the NTC entered into a series of financing transactions referred to as Private Placements which resulted in NTC issuing $600 million in Senior Secured Fixed Rate Notes and a $150 million Senior Secured Revolving Credit Facility. The majority of the proceeds of the Private Placement are to provide funding for a number of capital projects at the NTC. Pursuant to an agreement between the NTC and United States Tennis Association, Inc.("USTA"), dated as of July 1, 1993, as amended from time-to-time NTC has the right to sell and collect ticket revenue for US Open Tennis Championships held at the Billie Jean King National Tennis Center. Pursuant to the NTC's lease with New York City, certain Private Placement documents, and the agreement with the USTA, the US Open Tennis Championships are held annually at the facility.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Community Tennis Development</FormAndLineReferenceDesc>
        <ExplanationTxt>The Community Tennis Development program at the NTC provides for diverse and multiple modalities designed to promote and develop the game of tennis. In addition to promoting valuable social skills, the overarching goal is to ensure all participants, regardless of age, gender and other attributes, pursue activities which enrich their health and physical fitness. This goal is achieved through the NTC's: Recreation Facility - The NTC is open to the public seven days a week, except for the time period of the US Open Tennis Championships or when closed for necessary repairs. Through Community Outreach initiatives, the general public is encouraged to take advantage of the indoor/outdoor tennis courts and other facilities. Courts may be reserved two days in advance or used on the day of play on a first-come, first-serve basis. In 2016, it is estimated that more than 100,000 individuals utilized the facility. Tennis Clinics and Development - The NTC conducts community outreach clinics, such as: Community District 21 "Health and Fitness Day" at the NTC, Queens Day and Ace'ing Autism clinics at the US Open, Friday's "Under the 7" street clinics, Play Streets throughout the borough of Queens, and the annual Queens District Attorney's Star Track "Say Yes to Tennis, No to Violence" program for at-risk youth. The NTC also actively supports partner organizations including: New York Junior Tennis and Learning, the NYC Department of Parks and Recreation, and the City Parks Foundation, which provides thousands of youngsters a free opportunity to learn and play tennis. Free tennis workshops are also conducted for recreational tennis coaches. In addition to the clinics, the NTC provides tennis instruction with an educational component for local schools through our ACES (Alternative Classroom Environment for Students) program. From October 2016 through June 2017, this program served over 7000 students from NYC public, charter, and private schools as well as students from surrounding school communities. NTC Tournaments/Events - This program promotes tennis play at the NTC by providing various competitions for local players. Hundreds of boys and girls, ages 6-10 years old, participate in organized, fun, non-elimination, maximal encounter Play Days and Events utilizing short courts, low compression tennis balls and appropriately sized racquets. Older youngsters participate in USTA sanctioned tournaments such as the USTA NTC Junior Classic, a larger, Level 1 sectional tournament, held for boys and girls from New York, New Jersey and Connecticut. NTC Summer Camps - Hundreds of NYC children attend our Summer Camps in which they are provided basic tennis instruction, including multi-sport cross-training. The 10 &amp; Under Tennis format is specifically designed to "fit" younger children. Campers will also benefit with the introduction of Net Generation. In addition to basic fitness, all campers are imbued with qualities of good sportsmanship, leading to overall character building. These services are provided at an affordable cost, making it possible for youngsters who would not otherwise get the chance to attend camp or receive tennis instruction. In addition, scholarships are provided to local "ACES" program schools. More than 800+ youngsters participated in the seven week session in 2016. NTC Teaching Programs - These programs provide the public with quality, reasonably-priced tennis instruction from USPTA and/or PTR certified full-time teaching staff. These teaching programs service thousands of players, from the very young (3 years old) to our senior citizens (90+ years old), with a wide variety of lesson plans suited to their abilities. The instructors also work in conjunction with other NTC programs such as adaptive tennis for physically and/or intellectually challenged populations. As with our Summer Camp program, Net Generation will be effectively utilized.</ExplanationTxt>
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        <FormAndLineReferenceDesc>990 Review Process</FormAndLineReferenceDesc>
        <ExplanationTxt>Upon completion by the staff, the Form 990 is reviewed by internal and external legal counsel. Then, the Form 990 is reviewed by the NTC's Audit Committee. The Form 990 is also distributed to the full Board of Directors in advance of filing.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Conflict of Interest-Line 12C of Part VI</FormAndLineReferenceDesc>
        <ExplanationTxt>The NTC has a Conflict of Interest and Disclosure Policy that applies to all employees, and a separate conflict of interest policy for Board Members; each of the policies are substantially the same. The Conflict of Interest and Disclosure Policy requires each employee and Board Member to report all interests and relationships that could present a potential conflict of interest. NTC obtains annual certifications from employees and Board Members. The Ethics Officer of NTC's Sole Member, USTA, reviews the completed disclosure statements for employees and the NTC's Audit Committee reviews the completed disclosure statements for the Board Members. The Ethics Officer and the Chair of the Audit Committee have the discretion to share the disclosure statements with the Board of Directors and/or the Chief Operating Officer. The Ethics Officer and the Chair of the Audit Committee determine whether a conflict exists and mark their decision on the disclosure statement, also indicating the required corrective action should they determine that a conflict exists (which may include, but is not limited to, prohibition in participating, deliberating and deciding issues and/or in transactions).</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Compensation Review and Approval-Line 15 of Part VI</FormAndLineReferenceDesc>
        <ExplanationTxt>The Compensation Committee has responsibility for establishing a compensation strategy and setting the compensation of the key employees of NTC. The Compensation Committee meets a minimum of four times per year and maintains minutes of its meetings. Compensation and incentive plan levels are set by the Committee following review of appropriate comparability data. Appropriate comparability data includes, but is not limited to, (i) information regarding compensation paid by similar organizations for similar services, (ii) the availability of similar services in the organization's geographic area, and (iii) compensation surveys compiled by independent firms. Last review completed in the fourth quarter of 2016.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Public Availability of Organization's Documents-Line 19, PartVI</FormAndLineReferenceDesc>
        <ExplanationTxt>Upon request the public is provided copies of the Organization's tax return, Form 990. In addition, the Bylaws and the conflict of interest policy are also available upon request from the Organization's legal department.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Member Organization</FormAndLineReferenceDesc>
        <ExplanationTxt>The USTA is the sole member of NTC and elects the directors of NTC. Pursuant to NTC's Bylaws, the sole member has the right to remove directors with or without cause, to fill vacancies in the Board of Directors, and to amend the Certificate of Incorporation and the Bylaws of NTC. In addition, the sole member has the right to approve or ratify certain decisions of the Board of Directors of NTC (such as the decision to merge or dissolve) pursuant to the State of New York Not-for-Profit Corporation Law.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>United States Tennis Association Inc</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>70 West Red Oak Lane</AddressLine1Txt>
          <CityNm>White Plains</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10604</ZIPCd>
        </USAddress>
        <EIN>135459420</EIN>
        <PrimaryActivitiesTxt>Tennis</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(6)</ExemptCodeSectionTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>USTA PLAYER DEVELOPMENT INCORPORATED</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>70 WEST RED OAK LANE</AddressLine1Txt>
          <CityNm>WHITE PLAINS</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10604</ZIPCd>
        </USAddress>
        <EIN>271368195</EIN>
        <PrimaryActivitiesTxt>YOUTH DEVELOP</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>12A</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>USTA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>USTA Foundation INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>70 WEST RED OAK LANE</AddressLine1Txt>
          <CityNm>WHITE PLAINS</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10604</ZIPCd>
        </USAddress>
        <EIN>133782331</EIN>
        <PrimaryActivitiesTxt>GRANT GIVING</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>7</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>USTA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedOrgTxblPartnershipGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>Cincinnati Tennis LLC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>250 EAST FIRTH ST STE 1310</AddressLine1Txt>
          <CityNm>CINCINNATI</CityNm>
          <StateAbbreviationCd>OH</StateAbbreviationCd>
          <ZIPCd>45202</ZIPCd>
        </USAddress>
        <EIN>264273680</EIN>
        <PrimaryActivitiesTxt>Tennis Tourna</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
      </IdRelatedOrgTxblPartnershipGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>true</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>true</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>United States Tennis Association Inc(USTA)</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>J</TransactionTypeTxt>
        <InvolvedAmt>1854816</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Cash</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>USTA - See Schedule R part VII</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>N</TransactionTypeTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>USTA - See Schedule R part VII</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>O</TransactionTypeTxt>
      </TransactionsRelatedOrgGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Transactions with Related Organizations</FormAndLineReferenceDesc>
        <ExplanationTxt>LINE 1N- PURSUANT TO THE NTC CERTIFICATE OF INCORPORATION, CITY LEASE AND US OPEN AGREEMENT, NTC MAKES THE FACILITY AVAILABLE TO USTA FOR HOLDING THE US OPEN. UNDER THE US OPEN AGREEMENT, NTC HAS THE RIGHT TO COLLECT TICKET AND OTHER US OPEN RELATED REVENUE. LINE 1O - EXECUTIVE AND ADMINISTRATIVE STAFF OF USTA PROVIDE ASSISTANCE TO NTC AT NO CHARGE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>