Jackson Withrow (born July 7, 1993) is an American professional tennis player who specializes in doubles. Withrow has a career-high ATP doubles ranking of world No. 16 achieved on 19 February 2024. Withrow has won 10 ATP doubles titles.

Career 2011: ATP debut Withrow competed in 2011 US Open doubles, where he received together with his partner Jack Sock a wildcard. In the first round they were beaten by 15-seeded Xavier Malisse from Belgium and Mark Knowles from the Bahamas.

2016: NCAA doubles finalist Withrow played college tennis at Texas A&M.

At the 2016 NCAA Men's Tennis Championship, Withrow and Texas A&M Aggies teammate Arthur Rinderknech lost the individual doubles championship to UCLA's Mackenzie McDonald and Martin Redlicki in the final match.

2017: First ATP win in doubles Withrow and Sock received a wildcard for the 2017 Cincinnati Masters doubles tournament, where they lost to Juan Sebastián Cabal and Fabio Fognini in the first round.

He won his first ATP level doubles match with partner Austin Krajicek at the 2017 US Open by defeating Philipp Oswald and André Sá in the first round.

2018: First ATP doubles title Withrow and Sock made a doubles run to the title at the 2018 Delray Beach Open, first defeating Leander Paes and Purav Raja in the first round. Next the pair upset the Bryan brothers in the quarterfinals in 3 sets, then won their next match to set up a finals match against Nicholas Monroe and John-Patrick Smith. Withrow and Sock prevailed in three sets to win the tournament, marking Withrow's first ever ATP tour-level title as well as his first doubles title.

2019–20: US Open quarterfinal in doubles

At the 2019 Australian Open he reached the third round with Jack Sock, defeating second seeded pair and previous year finalists Juan Sebastián Cabal / Robert Farah on the way.

At the 2019 US Open, partnering Sock, he reached his first Grand Slam quarterfinal defeating the Bryan brothers en route but lost to 15th seeded pair of Jamie Murray/Neal Skupski.

He reached a career-high doubles ranking of World No. 66 on 13 January 2020.

2021: New partnership with Lammons, Win over World No. 1 team At the 2021 US Open partnering Nathaniel Lammons they defeated top pair Nikola Mektić and Mate Pavić in the first round in 75 minutes.

2022: Second ATP title, top 50 debut At the 2022 San Diego Open he won his first ATP title as a team with Lammons. The pair moved up 25 places to 35th in the doubles race. He made his top 50 debut in the rankings on 26 September 2022.

The pair Withrow/Lammons ended the season at No. 32 in the ATP doubles rankings.

2023–24: Eight titles, Major and Masters semifinals, top 20 With Lammons, Withrow reached three finals in Auckland, in Dallas and at the ATP 500 Mexican Open in Acapulco. The pair won the Challenger title at the 2023 Arizona Tennis Classic. At the 2023 Miami Open they reached the semifinals of a Masters for the first time but lost to eventual champions Santiago González and Édouard Roger-Vasselin.

During the American summer swing, in the span of two months Withrow and Lammons won three titles at the 2023 Atlanta Open, the 2023 Hall of Fame Open and the 2023 Winston-Salem Open.

Withrow reached the top 25 on 16 October 2023. The pair reached their eight final for the season and second at the ATP 500 level at the 2023 Erste Bank Open in Vienna. At the last Masters of the season in Paris the pair reached the quarterfinals defeating sixth seeds Máximo González and Andrés Molteni.

Withrow reached a new career-high ranking of World No. 16 on 19 February 2024. Withrow and Lammons won their sixth title as a pair at the 2024 Libéma Open defeating top seeds Wesley Koolhof and Nikola Mektić.

They successfully defended their Atlanta title making them the last champions at the tournament. The pair captured their first ATP 500 title at the 2024 Mubadala Citi DC Open in Washington D.C. They also successfully defended their Winston-Salem Open title, making it the fourth team title for the season. At the US Open Withrow reached the semifinals of a Grand Slam for the first time in his career, partnering Lammons, with wins over three-time defending champions Joe Salisbury and Rajeev Ram and 13th seeds Wesley Koolhof and Nikola Mektić. They lost to eventual champions Max Purcell and Jordan Thompson in straight sets. At the 2024 Shanghai Masters, they reached the quarterfinals but lost to Wesley Koolhof and Nikola Mektić which halted their attempt to move one position up above their opponents in the ATP doubles race from their current place of No. 9.

Performance timeline

Current till the 2025 Stockholm Open. Tournament2011...2016201720182019202020212022202320242025SRW–LGrand Slam tournamentsAustralian OpenAAAA3R2RA2R1R3R2R0 / 66–6French OpenAAA1RA1R1R3R1R1R1R0 / 72–7WimbledonAAA1RANH1R2RQF3R1R0 / 66–6US Open1RA2R2RQF2R2R2RQFSF2R0 / 1016–10Win–loss0–10–01–11–35–22–31–35–46–47–4 2–40 / 2930–29ATP Tour Masters 1000Indian WellsAAAAAAAA1RQF1R0 / 32–3Miami OpenAAAAAAAASF2R2R0 / 35–3Monte-Carlo MastersAAAAAAAAA2R1R0 / 21–2Madrid OpenAAAAAAAA2RQF1R0 / 33–3Italian Open AAAAAAAA1R1R0 / 20–2Canadian OpenAAAAAAAA2R1R1R0 / 31–3Cincinnati OpenAA1RAAAAA1R1R1R0 / 40–4Shanghai MastersAAAAANH1RQFA0 / 22–2Paris MastersAAAAAAAAQF1RA0 / 22–2Win–loss0–00–00–10–00–00–00–00–07–78–91–70 / 2416–24Career statisticsTournaments10213591519303326153Titles–Finals0–00–00–01–20–00–00–01–24–94–40–010–17Overall win–loss0–10–01–212–129–53–97–1518–1853–2741–298–26152–144Year-end rankingN/A45010987678290502319119 Note: No activity between 2012 and 2015.

ATP finals Doubles: 17 (10 titles, 7 runner-ups) Legend Grand Slam Tournaments (0–0) ATP World Tour Finals (0–0) ATP World Tour Masters 1000 (0–0) ATP World Tour 500 Series (1–2) ATP World Tour 250 Series (9–5) Finals by surface Hard (8–6) Clay (0–1) Grass (2–0)Finals by settingOutdoor (9–4)Indoor (1–3)

ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreLoss0–1Ecuador Open, Ecuador250 SeriesClay Austin Krajicek Nicolás Jarry Hans Podlipnik Castillo6–7(6–8), 3–6Win1–1Delray Beach Open, United States250 SeriesHard Jack Sock Nicholas Monroe John-Patrick Smith4–6, 6–4, [10–8]Win2–1San Diego Open, United States250 SeriesHard Nathaniel Lammons Jason Kubler Luke Saville7–6(7–5), 6–2Loss2–2Gijón Open, Spain250 SeriesHard (i) Nathaniel Lammons Máximo González Andrés Molteni7–6(8–6), 6–7(4–7), [5–10]Loss2–3Auckland Open, New Zealand250 SeriesHard Nathaniel Lammons Nikola Mektić Mate Pavić 4–6, 7–6(7–5), [6–10]Loss2–4Dallas Open, United States250 SeriesHard (i) Nathaniel Lammons Jamie Murray Michael Venus6–1, 6–7(4–7), [7–10]Loss2–5Mexican Open, Mexico500 SeriesHard Nathaniel Lammons Alexander Erler Lucas Miedler6–7(9–11), 6–7(3–7)Win3–5Hall of Fame Open, United States250 SeriesGrass Nathaniel Lammons William Blumberg Max Purcell6–3, 5–7, [10–5]Win4–5Jul 2023Atlanta Open, United States250 SeriesHard Nathaniel Lammons Max Purcell Jordan Thompson7–6(7–3), 7–6(7–4)Win5–5Aug 2023Winston-Salem Open, United States250 SeriesHard Nathaniel Lammons Lloyd Glasspool Neal Skupski6–3, 6–4Loss5–6Sep 2023Zhuhai Championships, China250 SeriesHard Nathaniel Lammons Jamie Murray Michael Venus 4–6, 4–6Win6–6Sep 2023Astana Open, Kazakhstan250 SeriesHard (i) Nathaniel Lammons Mate Pavić John Peers 7–6(7–4), 7–6(9–7)Loss6–7Vienna Open, Austria500 SeriesHard (i) Nathaniel Lammons Rajeev Ram Joe Salisbury4–6, 7–5, [10–12]Win7–7Libéma Open, Netherlands250 SeriesGrass Nathaniel Lammons Wesley Koolhof Nikola Mektić 7–6(7–5), 7–6(7–3)Win8–7Jul 2024Atlanta Open, United States (2)250 SeriesHard Nathaniel Lammons André Göransson Sem Verbeek4–6, 6–4, [12–10]Win9–7Washington Open, United States500 SeriesHard Nathaniel Lammons Rafael Matos Marcelo Melo7–5, 6–3Win10–7Aug 2024Winston-Salem Open, United States (2)250 SeriesHard Nathaniel Lammons Julian Cash Robert Galloway6–4, 6–3

ATP Challenger and ITF Tour finals

Doubles: 30 (19–11) LegendATP Challenger (16–9)ITF Futures (3–2)Finals by surfaceHard (16–10)Clay (3–1)

ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin1–0USA F25, EdwardsvilleFuturesHard Connor Smith Luke Bambridge Marc Polmans6–3, 6–2Loss1–1Canada F7, TorontoFuturesClay Hunter Reese Hans Hach Rhyne Williams5–7, 4–6Loss1–2USA F31, HoustonFuturesHard Hunter Reese Hans Hach Rhyne Williams3–6, 3–6Win2–2USA F2, Long BeachFuturesHard Austin Krajicek Luke Bambridge Joe Salisbury6–3, 3–6, [10–8]Win3–2Maui, USAChallengerHard Austin Krajicek Bradley Klahn Tennys Sandgren6–4, 6–3Win4–2Morelos, MexicoChallengerHard Austin Krajicek Kevin King Dean O'Brien6–7(4–7), 7–6(7–5), [11–9]Win5–2USA F21, TulsaFuturesHard Austin Krajicek Tommy Paul Nathan Ponwith6–4, 6–2Win6–2Gatineau, CanadaChallengerHard Bradley Klahn Hans Hach Vincent Millot6–2, 6–3Win7–2Granby, CanadaChallengerHard Joe Salisbury Marcel Felder Go Soeda4–6, 6–3, [10–6]Loss7–3Shenzhen, China, P.R.ChallengerHard Austin Krajicek Sriram Balaji Vishnu Vardhan6–7(3–7), 6–7(3–7)Loss7–4Hua Hin, ThailandChallengerHard Austin Krajicek Sanchai Ratiwatana Sonchat Ratiwatana4–6, 7–5, [5–10]Win8–4Indian Wells, USAChallengerHard Austin Krajicek Evan King Nathan Pasha6–7(3–7), 6–1, [11–9]Win9–4Columbus, USAChallengerHard (i) Roberto Maytín Hans Hach Donald Young6–7(4–7), 7–6(7–2), [10–5]Loss9–5Lexington, USAChallengerHard Roberto Maytín Diego Hidalgo Martin Redlicki2–6, 2–6Win10–5Columbus, USAChallengerHard Martin Redlicki Nathan Pasha Max Schnur6–4, 7–6(7–4)Loss10–6Orlando, USAChallengerHard Mitchell Krueger Andrey Golubev Aleksandr Nedovyesov5–7, 4–6Win11–6Nur-Sultan, Kazakhstan ChallengerHard (i) Nathaniel Lammons Nathan Pasha Max Schnur6–4, 6–2Win 12–6 Heilbronn, GermanyChallenger Clay Nathaniel Lammons André Göransson Sem Verbeek 6–7(4–7), 6–4, [10–8]Win13–6Champaign, USA ChallengerHard (i) Nathaniel Lammons Treat Huey Max Schnur6–4, 3–6, [10–6]Loss13–7Cleveland, USA ChallengerHard (i) Robert Galloway William Blumberg Max Schnur3–6, 6–7(4–7)Win14–7Sarasota, USA ChallengerClay Robert Galloway André Göransson Nathaniel Lammons6–3, 7–6(7–3)Win15–7Salzburg, Austria ChallengerClay Nathaniel Lammons Alexander Erler Lucas Miedler7–5, 5–7, [11–9]Win16–7Cary, USA ChallengerHard Nathaniel Lammons Treat Huey John-Patrick Smith7–5, 2–6, [10–5]Win17–7Phoenix, USA ChallengerHard Nathaniel Lammons Hugo Nys Jan Zieliński 6–7(1–7), 6–4, [10–8]Loss17–8Roanne, France ChallengerHard (i) Joran Vliegen Vasil Kirkov Bart Stevens6–4, 1–6, [4–10]Loss17–9Morelia, Mexico ChallengerHard Nathaniel Lammons Diego Hidalgo Patrik Trhac6–7(5–7), 6–7(4–7)Loss 17–10 Chișinău, MoldovaChallenger Hard Nathaniel Lammons George Goldhoff Theodore Winegar 1–6, 4–6Win 18–10 Lincoln, USAChallenger Hard Nathaniel Lammons George Goldhoff Cleeve Harper 6–3, 6–3Win 19–10 Vancouver, CanadaChallenger Hard Nathaniel Lammons Daniel Milavsky Braden Shick 7–6(9–7), 7–6(7–1)Loss 19–11 Tiburon, USAChallenger Hard Nathaniel Lammons Hans Hach Verdugo JJ Tracy 6–7(7–9), 4–6

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