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Global Motorsports Group (GMG) Racing

Founded in 2001 by James Sofronas and Fabryce Kutyba, GMG has quickly established itself as North America's premier performance tuning facility. What began as a small 1200 sq. ft. shop, maintaining two race cars, has grown into a 15,000 sq. ft. state-of-the-art performance tuning, racing and service facility located in (Orange County) Santa Ana, California, located directly across from Porsche Motorsport North America (PMNA). This close proximity offers GMG a clear advantage when upgrading performance and developing racing products.

Sofronas and Kutyba have been actively racing professionally for over 10 years, especially in World Challenge. The have raced in the most competitive series in North America in both Porsches, Audis and BMWs.


James Sofronas

Age: 41
Hometown: Newport Beach, CA

World Challenge Car Number: 14
Car: Porsche 911 GT3
World Challenge Class: GT
Driving Highlights:
2010: Sits second in the GT Drivers鈥� Championship and won the Round 9 race at Mid Ohio Sports Car Course. Sofronas has finished second in four races this season.
2009: Sofronas had his most successful season in World Challenge, finishing 2nd in the GT Drivers鈥� Championship and earning his second and third career wins (Long Beach and Mazda Raceway Laguna Seca). Was also on the podium at Watkins Glen and Mid-Ohio and was the fastest qualifier at Autobahn and Road America.

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Dino Crescentini

Age: 49
Hometown: Malibu, CA

World Challenge Car Number: 4
Car: Porsche 911 GT3
World Challenge Class: GT

Driving Highlights:

2010: Sits 7th in the GT Drivers鈥� Championship and won Round 2 race at St. Petersburg, while finishing second at Long Beach.
2009: Finished a career-best ninth in the GT Drivers鈥� Championship despite missing two races after a crash in practice at Long Beach. Earned his second career win at Watkins Glen.

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William Ziegler

Age: 55
Hometown: Ponte Vedra Beach, Fla.

World Challenge Car Number: 05
Car: Porsche 911 GT3
World Challenge Class: GT

Driving Highlights:

2010: Sits 12th in the GT Drivers鈥� Championship.聽 Best finish of season was an 8th in Round 11 at VIR.

2009: Finished 10th in the World Challenge GT Championship, earning Rookie of the Year. Recorded two top-10 finishes with a season best finish of eighth at Sebring.