The Stuttgart Cup™ and Mission Foods GT3 Cup Trophy USA by Car Amigo had a competitive opening day of racing Saturday at the HSR Sebring Historics where half a dozen different drivers scored victories in a pair of races.In the morning one-hour Enduro, Bill Riddell took Stuttgart Cup Cayman class honors while Steve White and Louis-Philippe Dumoulin and Brad Blum and Ron Zitza co-drove to GT3 class victories.Riddell, the reigning Stuttgart Cup Cayman Champion, moved closer to a repeat title with victories in the Enduro and in the eight-lap afternoon sprint race in his black and white-striped No. 05 Cayman S. He actually trailed fellow Cayman competitor Mark Sandridge across the finish line in the sprint with each driver taking class honors. Sandridge took the trophy in the 3.8-liter class in his red and white No. 49 Cayman S while Riddell was the top 3.4-liter competitors in both races.Riddell shared the 3.4 liter podium Saturday with Henry Davis, who scored runner-up honors in both races in his white No. 21 Cayman S with a PDK transmission, and series-newcomer Richard Stavola. Stavola, who finished third in both races, is making his Stuttgart Cup debut as part of a three-car entry from Cayman racing stalwarts Bodymotion Racing. He drives the No. 22 Cayman S alongside Bodymotion teammates Scott Leder (No. 87 Cayman S) and Tom Kievit (No. 27 Cayman S) who both showed well in Saturday’s races.White and Dumoulin won the Mission Foods GT3 3.8-liter class in the one-hour race in which they were also the highest placing Porsche with a sixth-place overall finish in the 43-car field.Rob Blake and teammate Gavin Riches finished second in the Enduro while the grandfather-and-grandson duo of John Ware and Cody Ware finished third. The Wares drive the No. 91 2006 Porsche 997 Cup while the No. 39 wheeled by White and Dumoulin and the No. 74 of Blake and Riches are both 2010 Porsche 997 Cup cars.In the sprint race, Zitza took the wheel of the No. 74 and promptly scored the class victory and a solid second-place overall finish in the 28-car field. White finished second in the No. 39 while John Ware finished third in the No. 91.Randy Cassling also had a great day in his 3.6 liter Cup car, finishing second with teammate Christian Coggins to Blum and Zitza in the Enduro and scoring a first-place finish in the sprint. Debuting driver Randy Griffin also hit the 3.6 liter podium with a runner-up result in the sprint.The Stuttgart Cup/Mission Foods GT3 schedule at the Sebring Historics wraps up Sunday with another sprint race before the weekend’s featured Four Hours of Sebring.Noteworthy- Up-and-coming driver Skylar Robinson, son of IMSA Camel GT driver Chip Robinson, symbolically took the wheel of one his father’s most memorable race cars on Saturday. The younger Robinson, 18, co-drove in the Enduro with Stuttgart Cup regular Joe Sullivan in a No. 14 Cayman S that carries the exact livery of the famous No.14 Al Holbert Racing Lowenbrau Porsche 962 that Chip Robinson drove to the 1987 IMSA Camel GTP Championship. “Joe was gracious enough to let me drive his car for the weekend and run the Enduros with him,” Sklyar Robinson said. “I don’t think many people can say they got to drive the same car or even one that looked like what that their dad got to drive. It’s really cool, it’s a great looking car, both the 962 and as the Cayman. It’s a great little car, a very stable platform.”- Stuttgart Cup series driving coach Shane Lewis was actually the first Cayman competitor across the finish line in the Enduro while finishing 11th overall. As a professional driving solo, Lewis wasn’t eligible for championship points but he was still racing for a purpose. Lewis was driving the yellow No. 139 Cayman S owned by longtime driver Darrell Fancher who last competed exactly one year ago at the 2013 Sebring Historics. Fancher has since retired from racing and put his No. 139 up for sale but remains one of the most dedicated members of the Racelink and Stuttgart Cup racing family. Open to Porsche Caymans and Boxsters, The Stuttgart Cup™ has grown rapidly in just its second season of competition. Partnering with Mission Foods GT3, which has been a fixture on classic and historic race weekends for the last several seasons, was an ideal collaboration that has attracted strong competitor interest after debuting this past April at The Mitty.Both The Stuttgart Cup™ and the Mission Foods GT3 Cup Trophy USA by Car Amigo are managed by Americas Cup GT L.L.C. Both championships are sprint and endurance series with The Stuttgart Cup™ open to all Porsche Caymans and Boxsters and Mission Foods GT3 open to all 2000 and later Porsche 911 GT3s and related models. Rules for both series are centered on power to weight ratio. All competing Stuttgart Cup cars must compete with stock make and model engine and transmissions with approved allowances for exhaust and intake modifications. Stuttgart Cup organizers also welcome all competitors with existing race-prepared Caymans or Boxsters to compete with body and engine modifications balanced within series power to weight ratio parameters. All such competitors will not be eligible for championship points or class-designated race wins, but the door is always open to all Cayman and Boxster competitors to get in on the action.