Scott Parel added 27 points Saturday to his total 61 to lead the Diamond Resorts Invitational in Orlando by one over Wes Short Jr. and Joe Durant.
Parel is a former PGA Tour Champions Monday qualifier who earned co-medalist honors at the tour's Q-School in 2016. In his first full season on the senior circuit last year, he racked up six top-10 finishes - including a tie for second at the Regions Traditions - and finished 21st in the Charles Schwab Cup points race.
Parel has made 11 of his 14 birdies through two rounds on Tranquilo Golf Club's back nine to take the 18- and 36-hole leads in the modified stableford event.
Brooke Henderson is the highest-ranked female on the leaderboard, tied for seventh with 55 points.
In the celebrity portion of the event, defending champion and tennis pro Mardy Fish leads by six points over former Major League Baseball pitcher Mark Mulder.