Between the 2009-10 and 2019-20 seasons, Dustin Johnson had the most tournament wins, with 21 tournament wins.

most pga tour wins 2009-10 to 2019-20
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JohnsonMcIlroyThomasDayWatsonSpiethWoodsRoseReedSnedekerScottKoepkaMickelsonKucharSimpsonDeChambeauWalkerJohnsonHaasRahmMatsuyamaHorschel211713121211111088877776666555
NAMEEVENTSWINSTOP 10ROUNDSMONEY
Dustin JohnsonDustin Johnson3792194763$62,527,880
Rory McIlroyRory McIlroy2421784607$48,842,847
Justin ThomasJustin Thomas1441354531$37,378,435
Jason DayJason Day3681274732$45,520,273
Bubba WatsonBubba Watson3951255777$39,927,913
Jordan SpiethJordan Spieth1811164648$41,113,810
Tiger WoodsTiger Woods1401134401$27,924,967
Justin RoseJustin Rose3661073703$44,617,130
Patrick ReedPatrick Reed209848735$31,163,018
Brandt SnedekerBrandt Snedeker439861871$32,736,162
Adam ScottAdam Scott321860677$36,026,670
Brooks KoepkaBrooks Koepka175741464$30,407,970
Phil MickelsonPhil Mickelson398752784$36,095,197
Matt KucharMatt Kuchar462787942$43,582,894
Webb SimpsonWebb Simpson454771901$39,125,248
Bryson DeChambeauBryson DeChambeau95625321$18,096,270
Jimmy WalkerJimmy Walker443643849$24,310,325
Zach JohnsonZach Johnson451649893$28,921,249
Bill HaasBill Haas449646884$25,456,717
Jon RahmJon Rahm78537290$21,065,855
Hideki MatsuyamaHideki Matsuyama159546591$28,859,059
Billy HorschelBilly Horschel341543817$24,400,330
Rickie FowlerRickie Fowler433570852$38,329,487
Marc LeishmanMarc Leishman442545865$28,351,976
Hunter MahanHunter Mahan429533775$20,102,248
StatMuse has season-level data for tournament wins going back to the 1979-80 season.