San Bernardino, Calif. – June 16, 2011 - The 2011 Yamaha Quad-X Series presented by STI returns this Saturday, June 18th, for round four at Speedworld MX in Surprise, AZ. Saturday’s race marks the mid-point of the 2011 Quad-X Championship, and will be the first of the season’s two night races.

Yamaha’s Dustin Nelson has won the first three rounds of the series, giving him a perfect score of 75 points in the series standings. Nelson is looking to extend his points lead as he attempts to defend his 2010 Pro 450 Production Class title.

After finishing second overall over the past three rounds, Beau Baron sits only nine points behind Nelson in the series standings. With the series nearing the halfway mark, Baron still has a very realistic chance of winning the 2011 championship if he can find a way to beat Nelson.

Ethan Thatcher remains third in points with 58, after finishing fifth overall at the previous round at Cahuilla Creek MX. At round three, Dirkie Baard and Josh Row battled for third overall, swapping third and fourth place moto finishes. Baard’s third in the second moto earned him the final spot on the overall podium for the day. With the series well underway, expect more intense racing as riders attempt to earn valuable series points.

For more information on the 2011 Yamaha Quad-X Series, including series schedule, class information and requirements, check out www.quadxseries.com. For the latest updates on this and other series at Glen Helen Raceway, become a fan on facebook at www.facebook.com/glenhelenraceway.

This Sunday, May 8th, at 10 A.M. Pacific (1 P.M. Eastern) don’t miss the exciting Lucas Oil Off Road Racing Series on CBS Sports. The MagnaFlow Off Road Nationals Presented by General Tire will showcase intense wheel-to-wheel racing action of the Pro-2 and Pro-4 divisions from Round 3 at Speedworld in Surprise, AZ.

The Pro-4 event features fifteen 900HP fire breathing 4 wheel drive trucks punching their way through the competition. Rick Huseman leads the field consuming the most points available so far through Rounds 1 and 2. Huseman aims to keep his E3 Sparkplugs Toyota in front and the winning streak alive while Kyle LeDuc and the 3 truck Rockstar Makita Team offers great competition.

The Pro-2 division is thick with talent and its anyone’s race up for grabs. “The Man” of course to beat, is 2010 Pro-2 Champion Rob MaCcachren in the Rockstar Energy Ford. After a DQ in Round 1 and a DNF in Round 2, Rob Mac is looking for redemption and to gain some points to retain his title. Pro-2 Rookie, Brian Deegan leads the class points going into Rounds 3 but with a full field of over twenty trucks and guys like Carl Renezeder it is sure to be an exciting race.

The Speedworld short course is one of the most technical and challenging tracks in the Lucas Oil Off Road Series. Seven corners featuring tight hairpins, steep banked turns, and high speed sweepers to big air table tops and a rough & tumble mogul field, CBS Sports fans and motorsports enthusiasts alike will be treated to the best off road racing action and truck loads of carnage.

Tune into CBS this Sunday at 10AM PST. / 1PM EST. for all the best action from Lucas Oil Off Road Racing Round 3.