Looks like Tiger and Phil are correct. Jim's shirt is wet from sweat. He must have been in agony fulfilling his duties as host @ the Greenbrier Classic. He looks likes a man in his early 60's that needs to lose more than 100 pounds. :(
I believe he 6'7" and weighs 375 lbs...he needs inpatient--supervised weight loss program.
Doubt if he can do this on his own.
Good luck to him...nice of John and Tiger to offer support.