Former champion Mark Calcavecchia attributed his opening round of 67 in the 138th Championship at Turnberry to a combination of painkillers and beer.
The 49-year-old considered pulling out of the event on Sunday evening having been forced to play 36 holes on the final day of the John Deere Classic.
Calcavecchia played the last round with his back in spasm and had it not been the Open he would definitely not have competed this week.
“Once I got done I took a few more Aleve (painkillers) and a couple of beers and I was okay, got on the plane, and several more beers went flowing down.
“The next thing you know we were landing and I felt pretty good on Monday.”