SALINAS, Calif. – Clemson University mechanical engineering student Alec Udell of The Woodlands, Tex., continued his impressive jump from the Porsche GT Cup to the SprintX division Friday by posting the quickest time in the second SprintX practice round for the season finale at the Pirelli World Challenge Championships presented by Nissan.

Udell, the 20-year-old 2016 GT Cup series champion, made the move to the No. 14 GMG Motorsports Porsche 911 GT3 R for the first time this season and clocked a top time of one minute, 25.450 for an average speed of 94.287 miles per hour. In the morning session, Udell, teaming with Brent Holden of Newport Beach, Calif., was also the quickest driver at 1:29.970 (94.819 m.p.h.) as conditions changed in the afternoon with the increased air and track surface temperature.

Udell recorded twelve race wins this year in the GT Cup division and clinched the driver’s championship with his double win last month at Sonoma Raceway.

St. Petersburg double GT winner Michael Lewis of Laguna Beach, Calif., secured the second quickest time with a 1:25.638 in the No. 98 Calvert Dynamics/CurbAgajanian Porsche 911 GT3 R followed by Kyle Marcelli of Barrie, Ont., Canada in the No. 19 Stephen Cameron Racing Audi R8 LM GT at 1:25.789.

Rounding out the top five the SprintX GT division was Gunner Jeanette of Salt Lake City, Utah, in the No. 79 WeatherTech/Alex Job Racing Porsche 911 GT3 R at 1:25.846 and David Ostella of Toronto, Ont., Canada in the No. 23 M1 GT Racing Audi R8 Ultra GT3 at 1:26.026.

In the SprintX GT Cup category, Jonathan Summerton of Redwood City, Calif., drove the No. 27 ANSA Motorsports Porsche 911 GT3 Cup machine to the fastest class time of 1:31.074, while the duo of Andrew Aquilante of Chester Springs, Pa., and Kurt Rezzatano of Phoenixville, Pa., clocked the quickest time in the SprintX GTS class with a 1:32.229.

Qualifying for the SprintX divisions will take place Friday at 3:50 p.m. PDT.