DETROIT — Peter Malnati has missed more cuts than he has made on the PGA Tour this season, filling his head with doubts about his game. Malnati shot a career-best, 9-under-par 61 to tie a tournament record in the first round of the final Rocket Classic on Thursday, giving him a two-shot lead. “I don’t think I took advantage of a super-easy course,” said the 39-year-old Malnati, who has won on the PGA Tour in 2024 and 2015. The PGA Tour is moving to a new model for 2028, effectively creating two tours, and Detroit organizers are taking an exit. The Rocket Classic and next week’s Wyndham Championship are the last two tournaments left before the top 70 advances to the FedEx Cup postseason.