Jason Day’s opening drive this morning proved his back is … fine

By Australian Golf Digest
It’s like we were watching two different golfers – the Jason Day who appeared to be nursing a back injury at the WGC-Dell Matchplay yesterday, and the Jason Day whose opening tee shot on the 381-yard first hole rolled to within eight feet of the hole.
We think his back is fine, based on the below video. Also courtesy of the US PGA Tour are highlights from day two in Texas.