The American Express was dealt a huge blow earlier this week when tournament favourite and world No.2 Jon Rahm withdrew from the PGA Tour event and no one knew why.
Former PGA Tour player and co-host of the 'Gravy and the Sleeve' show on the SiriusXM PGA Tour radio station Colt Knost decided to do some digging and got in touch with Rahm, who then revealed why he won't be competing this week.
"Truth is, I hurt myself in the gym on Friday," said the Spaniard. "I'm taking time off trying to be smart. I could play right now but I don't want to make it worse.
"I'm feeling good, just not 100%. I could play and make the cut, maybe even a top 20, but if I don't think I can win then there's no point in playing."
It's a wise decision from Rahm as making the injury worse would mean he could miss out on next week's Farmers Insurance Open, a big tournament on the PGA Tour, as well as the upcoming Phoenix Open, a tournament that means a lot to the 26-year-old.
After signing for Callaway earlier this month, Rahm said: “I’m so happy to be joining Callaway, and I can’t wait to start the year. The equipment is already performing well for me, and in my first round with the new setup, I shot a course record 59 at Silverleaf. I have confidence in my new Callaway clubs – and especially the golf ball, which has really impressed me during the testing process.”