Rory McIlroy (T1/-5) holds the first-round lead/co-lead for the fifth time at the BMW Championship, the most of any player at any PGA TOUR event on record (1983-present): 2012/won, 2014/T8, 2018/5th, 2021/4th, 2023/TBD.
Marked his 21st career 18-hole lead/co-lead on TOUR, the most of any player since his professional debut on TOUR in 2009; is 3-for-20 converting the first-round lead/co-lead to victory (2011 U.S. Open, 2012 BMW Championship, 2014 Open Championship).
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Entered the week at No. 3 in the FedExCup as he seeks his fourth FedExCup title (2016, 2019, 2022).
In search of his 25th PGA TOUR victory and third of the season (THE CJ CUP in South Carolina, Genesis Scottish Open).
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Has six top-10 finishes in 12 prior BMW Championship starts, including a win in 2012.
Brian Harman (T1/-5) holds the first-round lead/co-lead for the third time on the PGA TOUR; is 1-for-2 to date converting to victory (2014 John Deere Classic/won, 2014 RSM Classic/T41).
Best finish in nine prior BMW Championship starts is T12 in 2020 at Olympia Fields Country Club.
Entered the week at No. 9 in the FedExCup as he seeks to become the first player to win The Open Championship and FedExCup in the same season.
Highlighted by the longest hole-out of his PGA TOUR career (167 yards for eagle on the par-4 14th hole), Sahith Theegala (T3) opened with a 4-under 66.
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2023 Rocket Mortgage Classic winner Rickie Fowler (T3/-4) posted his 16th consecutive par-or-better round at the BMW Championship; currently No. 12 in the FedExCup, looking to advance to the TOUR Championship for the first time since 2019.
Following wins in each of the last two weeks (Wyndham Championship, FedEx St. Jude Championship), Lucas Glover (T23/E) is seeking to become the first player to win three consecutive weeks on TOUR since Tiger Woods in 2006 (PGA Championship, WGC-Bridgestone Invitational, Deutsche Bank Championship).
World No. 1 and 2023 PLAYERS champion Scottie Scheffler is T3/66/-4, 2023 U.S. Open champion Wyndham Clark (T3/66/-4), FedExCup leader Jon Rahm (T12/68/-2), 2021 and 2022 BMW Championship winner Patrick Cantlay (T12/68/-2).