Shane Lewis (Sprint), now in the #41 PF Racing Ford Mustang GT4 after starting the season in a Robinson Racing Camaro GT4, led the opening Pirelli GT4 America practice with a fastest lap of 1:42.879.
Guy Cosmo and the #89 RENNtech Motorsports Mercedes AMG GT4 finished the session second overall and fastest of the SprintX competitors after posting a best lap of 1:42.909.
Matt Brabham (Sprint), who returns to the series in the #20 CRP Racing Porsche Cayman GT4 CS MR, ran the third fastest lap with a 1:43.197.
Robby Foley (SprintX Pro-Am) finished the session fourth overall in the #21 Flying Lizard Motorsports Porsche 718 Cayman CS MR after a 1:43.245 flying lap. Recently crowned Sprint Am champion Drew Staveley would round out the top five in the #12 Ian Lacy Racing Ford Mustang GT4 with a best lap of 1:43.328.
Jade Buford (Sprint) would end the session in sixth in the #42 PF Racing Ford Mustang GT4 with Trent Hindman (SprintX West Pro-Am) seventh in the #77 Park Place Motorsports Porsche 718 Cayman CS MR.
James Sofronas (SprintX Am) would run the eighth quickest time in the #2 GMG Racing Porsche 718 Cayman CS MR with Vesko Kozarov (SprintX West Am) ninth in the #91 Rearden Racing Audi R8 LMS GT4. Harry Gottsacker (SprintX West Pro-Am) would finish with the tenth best lap of the session in the #28 ST Racing BMW M4 GT4.
Pirelli GT4 America practice 2 will go green on Friday, October 18th at 9:40am PT.