From Brian Keogh in Tucson
Padraig Harrington put himself through a punishing practice session after defeat to Stewart Cink at Dove Mountain.
The Dubliner spent close to three hours on the driving range following his narrow one hole loss in Thursday's second round.
It was almost dark when he finally called it a day after working closely with his caddie Ronan Flood on technical issues.
As usual, he was the last man to leave.
The world No 10 will complete a four-week run in the US when he tees it up in next week's Honda Classic in Florida.
Asked if he was looking forward to it, Harrington replied tersely: "I'm just looking forward to some practice."
Harrington probably didn't feel as much pain as American fan David Owens, who was hit in the most tender of male areas by Cink on the opening hole of their showdown.
Cink had sprayed his approach to the par five opening hole wide of the green, only to see the ball stopped by Owens.
Owens grimaced: "It didn't feel very good. But I was able to breathe again after a while."
Cink eventually saved par and escaped with a half before Harrington virtually threw away the match with three bogeys in a row.
Owens added: "He wasn't very grateful that my family jewels saved him from being in a mesquite tree."