Keep an eye on these players as the tournament starts (in alphabetical order):
Daniel Berger: Led after three rounds last year in his tournament debut after shooting a 62 in the third round. Shot a 74 in the final round. Won FedEx St. Jude Classic two weeks ago. Ranks 16th in birdie average (4.04), a good attribute for TPC River Highlands.
Paul Casey: Faced off with Bubba Watson before losing in a playoff in 2015. Is 16th in World Golf Rankings. Had great start at U.S. Open, and then stumbled with a 75 and 74 in final two rounds to finish 26th.
Jason Day: Fourth in world rankings. Best finish was second at AT&T Byron...