During his time off, he dealt with the disappointment of not being selected for the United States Ryder Cup team, but he also regained an enthusiasm that had been waning throughout the elongated season.
That fervor led to inspired scores of 60, 63 and 64 at a recreational course in his hometown of Scottsdale, Ariz.
And, amazingly so, he has carried with him both his zeal and his game to Vegas.
Lehman set a personal best and new TPC at Summerlin course record Thursday by shooting a bogey-free 10-under-par 62. Add that to his opening 63, and Lehman is torching records in the desert.
Lehman stands at 19-under-par 125 through two rounds of the 5-day pro-am. The score in relation to par is a new PGA Tour opening 36-hole record, while the aggregate number ties the record set by Tiger Woods at the 2000 NEC Invitational and matched by Mark Calcavecchia at this years Phoenix Open.
It sure was fun and easy the first two days, said Lehman. I needed to take some time off. I wasnt in shape to play and didnt want to play. It was a great seven weeks. I actually played a lot of golf at home, but now Im back out here, enjoying it again.
Lehman leads by three strokes over Fred Couples, who followed a first-round 63 with an 7-under 64 at the TPC at The Canyons.
Chris DiMarco set a new TPC at Summerlin course record with an 11-under-par 61 to race to 15-under for the tournament, four off the lead.
John Daly also went deep, shooting a career best 9-under 62 on The Canyons course. Daly, who has a win and a runner-up finish in his last two starts on the European Tour, is five back at 14-under.
Daly and Couples are each trying to snap winless streaks on the PGA Tour that date back to 1995 and '98, respectively.
Lehman is seeking his first PGA Tour victory since the 2000 Phoenix Open. Hes also trying to creep into the top-30 on the money list and earn a spot in the season-ending $5 million Tour Championship ' a tournament Lehman has qualified for each of the past seven seasons and won in 1996.
I think it would be a nice way to salvage the season if I can sneak in there, said Lehman, who is currently 36th on the money list.
This is one of only two 90-hole tournaments on the PGA Tour schedule. Earlier in the year, Joe Durant established the 90-hole scoring record by shooting 36-under 324 in the Bob Hope Chrysler Classic.
Lehman next plays the The Canyons, which is playing the most difficult of the three courses in rotation over the first three days, though Daly did manage to set a course record on Thursday.
Friday is the final day for amateurs to compete. The professionals that make the cut (low 70 and ties) will play the Summerlin course over the weekend.
Full-field scores from the Invensys Classic at Las Vegas