Jason Day complained of ‘severe sleep deprivation’ before US Open

Jason Day collapsed on the final hole of his second round of the U.S. Open on Friday after suffering from a bout of vertigo.

This issue of dizziness has ailed Day for a while; last year he withdrew from the Bridgestone Invitational because of dizziness. He also pulled out of the Byron Nelson Classic three weeks ago because of similar problems.

Entering this week’s event at Chambers Bay, Day discussed the issues he was battling. He talked about being sleep deprived and exhausted.

“I feel good,’’ Day said on Monday via the NY Post. “I had three sleep studies done. I had a lot of blood tests done. I had an MRI on my head and my back and everything came back negative. So I have no idea what that was, other than I just may have been exhausted.

“I was training so hard, I was doing two-a-days every day coming into tournaments and then on top of it I was doing practice, playing competitive golf and then trying to balance that with family, as well.

“It’s just a full-time kind of gig there, and I think I just ran out of gas and I wasn’t feeling good, so I had the shakes and the tingling up my arms. And the loss of energy and strength was probably caused by that. I’ve got severe sleep deprivation, so I guess that’s part and parcel of having a kid.

“I feel good this week. I just literally walked into the room and come off a half an hour nap, so I’m all good to go.’’

Though Day reiterated that he felt good, the reality is that he wasn’t doing so well Friday. He collapsed on the final hole but still recovered to save bogey. He enters Saturday’s play tied for ninth at two under.