Since 2017-18, Jon Rahm has the most top ten finishes / events played / 25, with 12.78.

who has the highest percent of top ten finishes per twenty five event since 2018
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RahmHensbyMcIlroyJohnsonThomasZalatorisMorikawaCantlayDeChambeauSchefflerSimpsonKoepkaWoodsRoseFitzpatrickSchauffeleFinauHattonCaseySchwabSmithHovland12.7812.512.0311.2810.539.629.528.898.798.338.158.047.937.897.787.587.36.516.336.256.256.25
NAMEEVENTSTOP 10/(EVENTS/25)TOP 10WINSROUNDSMONEY
Jon RahmJon Rahm8812.78456312$26,222,370
Mark HensbyMark Hensby212.5108$97,356
Rory McIlroyRory McIlroy7912.03387286$25,001,917
Dustin JohnsonDustin Johnson8211.28378294$26,492,572
Justin ThomasJustin Thomas9510.53408357$30,373,509
Will ZalatorisWill Zalatoris139.625040$2,852,150
Collin MorikawaCollin Morikawa639.52245225$17,641,399
Patrick CantlayPatrick Cantlay908.89327315$24,045,652
Bryson DeChambeauBryson DeChambeau918.79327326$23,861,381
Scottie SchefflerScottie Scheffler668.33224231$17,477,089
Webb SimpsonWebb Simpson928.15303333$18,565,204
Brooks KoepkaBrooks Koepka848.04276283$24,355,144
Tiger WoodsTiger Woods417.93133159$10,834,194
Justin RoseJustin Rose767.89243263$15,431,288
Matt FitzpatrickMatt Fitzpatrick457.78140152$5,910,954
Xander SchauffeleXander Schauffele997.58303354$21,200,247
Tony FinauTony Finau1137.3331393$19,638,545
Tyrrell HattonTyrrell Hatton736.51191241$10,705,872
Paul CaseyPaul Casey836.33212293$14,602,055
Matthias SchwabMatthias Schwab126.253040$783,999
Cameron SmithCameron Smith1006.25254329$20,043,268
Viktor HovlandViktor Hovland566.25143196$10,852,646
Patrick ReedPatrick Reed1096.19274389$18,008,921
Billy HorschelBilly Horschel1115.86262376$15,436,891
Jason DayJason Day905.83212281$11,632,548
StatMuse has season-level data for events played and top ten finishes going back to the 1979-80 season.