Due to the two-hour weather delay Thursday morning, tee times for the afternoon groups have been pushed back two hours. Here are a few groups to keep an eye on in the afternoon (along with their adjusted tee times):
2:44 p.m. ET (1st tee) -- Tiger Woods, Steve Stricker, Jason Bohn. Woods, the four-time Memorial champion, is making his first start since having to withdraw from THE PLAYERS Championship last month with a neck injury. Stricker came back from an injury last week in Fort Worth, finishing T38.
2:44 p.m. ET (10th tee) -- Camilo Villegas, Dustin Johnson, Matt Kuchar. Villegas has not played well in his last two starts, but he does have a win earlier this year at The Honda Classic. Johnson also has a win, having successfully defended his title at Pebble Beach. And Kuchar has played well at Muirfield Village in his last three starts, including a tie for fifth last year.
2:55 p.m. ET (1st tee) -- Tim Clark, Robert Allenby, Adam Scott. Clark and Allenby battled for THE PLAYERS title, with Clark finally breaking through for his first TOUR win. Scott won the Valero Texas Open in his last start.
2:55 p.m. ET (10th tee) -- Geoff Ogilvy, Lucas Glover, J.B. Holmes -- Ogilvy is a past U.S. Open champion. Glover is the defending champ. With the U.S. Open in two weeks, they'll be priming their games.
3:06 p.m. (10th tee) -- Kenny Perry, Mark Wilson, Mark Calcavecchia. Perry has won this event three times; Calcavecchia is making his last TOUR start before embarking on his Champions Tour career.