While many eyes will be on golf's return to the Olympics in Rio, the PGA Tour will still be conducting a full-field event at the John Deere Classic. Here are a few marquee, early-round groups to keep an eye on in Moline, Ill., highlighted by a trio of former champions (all times ET):
Mahan has made every edition of the FedEx Cup Playoffs dating back to 2007, but that streak is in serious jeopardy as he sits at No. 179 in the points race with only two events to go. Needing a big performance, he'll play the first two rounds alongside Villegas, who skipped the Olympics in order to better his chances of retaining his card for next season, and Goosen, who is making just his second start since missing the cut at the U.