Gallery: 4/9
Billy Horschel
Odds (Per SkyBet): 50/1
Horschel has had a wild range of results at TPC Boston, finishing 70th and 72nd in 2013 and '15, respectively, but mixing in a runner-up in 2014. Still, with sleeper picks you just want someone who has the ability to get hot and go low, and he has proven he can do exactly that. Plus, he's currently in a nice groove, finishing fifth at the Wyndham Championship and 13th at the Barclays. (Getty)