Each week, GolfChannel.com takes a look at the players who made moves up - and down - the various ranking systems in the world of golf.
• McIlroy moved up two spots to No. 3 after erasing a six-shot deficit at the Deutsche Bank Championship. It marks his highest ranking since he dropped to fourth following a missed cut at the U.S. Open.
• McIlroy's move means that Jordan Spieth is now down to No. 4 in the world. This week's BMW Championship will mark his first start while ranked outside the OWGR top 3 since the 2015 Masters, which he won.
• England's Casey let a three-shot lead slip away Monday at TPC Boston, but his runner-up finish was still enough to move him up eight spots to No. 22, equaling his best ranking since January 2012.
• PGA champ Jimmy Walker rose four spots to No. 15 after his third-place result in Boston, tying his best position since last August.
• Sweden's Alex Noren won a playoff at the Omega European Masters for his second European Tour win of the season. The title helped him jump 12 spots to No. 27, an impressive standing for a player who started the year ranked 96th.
• Scott Hend, the man Noren beat in the playoff, still moved up 16 spots to No. 66, while a third-place result in Switzerland helped Andrew "Beef" Johnston jump 14 spots to a career-best No. 74 in the world.
• Patrick Reed chased his Barclays win with a T-5 finish in Boston, moving up one spot to a career-best No. 8 in the world and inching closer to his top-5 declaration from more than two years ago.
• A T-8 finish in Boston extended David Hearn's PGA Tour season and also moved the Canadian up 23 spots to No. 116 in the world, his best standing since November.