Like the bird after which the host city was named, the #01 CompUSA Chip Ganassi Racing crew of Scott Pruett and Luis Diaz rose back to the top of the Grand-Am Rolex Series standings with victory under the lights at the GAINSCO Grand Prix.

Pruett claimed the lead on lap 95 in Phoenix, as Max Angelelli - who had won the race off pit-road as all the leaders pitted on the previous lap - was forced to return to the pits after the right front wheel on the #10 SunTrust Racing entry was found not to be properly attached. The #01 machine was not seriously challenged from that point onward, and Pruett went on to record a 9.026secs victory over Ryan Dalziel's #89 Playboy/Vonage/Palms Casino entry run by Pacific Coast Motorsport.

It was a Rolex Series-record tenth career Daytona Prototype victory for Pruett, and helped to elevate the American and co-driver Diaz back to the top of the points, ahead of Krohn Racing's Jorg Bergmeister Playboy/Uniden Racing's Michael McDowell.

"Luis and the whole CompUSA team did a great job this weekend," Pruett said, "The competition was tough, and the track was challenging, but I would like to thank Grand-Am for making the early decision to split the two classes for restarts. I believe this helped increase the level of racing throughout the race and lowered the numbers of yellows."

Pruett and Diaz added the Phoenix win to success in the Mexico City 250 and the Crown Royal Grand American Challenge of Long Beach, winning three of the seven events to date as the season reaches its halfway point.

"I was able to make clean passes and keep the car out of trouble early on," Diaz said, "The CompUSA guys did a great job keeping the car running really good all day. Even though it's still relatively early in the season, the championship is always on my mind, and it's awesome to get a win to put us back in the lead."

Despite mechanical problems midway through the race, Dalziel managed to work his way forward in the closing stages. He was running fourth with eleven laps remaining, when second-placed Adrian Fernandez and third-placed McDowell made contact and slid off course. That opened the door for Dalziel to take over second and score career-best Rolex Series results for himself and co-driver Alex Figge.

"When Alex handed the car over to me, it was running great," the Scot said, "We hit a little bit of bad luck in the middle of the race, when we lost a cylinder, and there were so many things that went against us during the race, but we've been fast out there pretty much all season, so this is the finish that the team deserves."

Shane Lewis and Craig Stanton matched the best-ever result for the #3 Southard Motorsports Riley-BMW with a third-place performance, with Stanton earning his best overall result in Rolex Series competition since 2003. The pairing also won the SunTrust Improve Your Position Award for their charge from 13th on the grid.

Angelelli, whose only lap led came on the 94th tour, and co-driver Jan Magnussen - who led a total of 15 laps - wound up fourth for a third-straight top-four performance for SunTrust Racing. Fernandez and co-driver Mario Haberfeld completed the top five in the #12 Lowe's machine, but were disappointed after Haberfeld started from the pole and led the first seven laps.

McDowell and co-driver Guy Cosmo came home sixth, followed by Bergmeister and Colin Braun in the #76 Krohn Racing machine. Alex Gurney and Jon Fogarty, who led 21 laps, finished eighth in the #99 GAINSCO/Blackhawk Racing Riley, with Michael Valiante and Rob Finlay ahead of Christian Fittipaldi and Stefan Johansson in rounding out the top ten.

For the second straight race, the #23 Ruby Tuesday Championship Racing Team had its race spoiled by mechanical problems, after Mike Rockenfeller started the machine 19th on the grid and ran as high as fourth before the race's first caution period. When the German came down pit-road, however, crew members went to work at the rear of the car to replace the alternator. After a lengthy stop, Patrick Long headed back out on the track, but was forced to come back to the pits leaking fluid. The #23 machine wound up 20th in the Daytona Prototype class.

Paul Edwards and Kelly Collins won their third GT class race of the season in the #64 TRG/iRise Pontiac GTO.R, with TRG team-mates Andy Lally and Marc Bunting finishing second. The victory marks the twelfth consecutive Rolex Series race in which at least one TRG Pontiac has finished on the class podium, and third place for Boris Said and Ross Thompson's #98 Pacific Coast GTO.R completed the first-ever GT-podium sweep for the model.

Collins took control of the #64 during the race's second caution period and never relinquished the lead, but had to hold off a hard-charging Lally before winning by a margin of just 0.310secs. Edwards started the machine fifth, but had moved to the front of the pack by the time his opening stint was over.

"This Phoenix track is a great track for the GTOs because it really fits our car," Edwards admitted, "It was a tough day because of problems with the power steering and air conditioning, but it's good for momentum, because we've had some tough runs the past couple weekends. It's good to be back."

The #64 duo won back-to-back races at the Autodromo Hermanos Rodriguez and Homestead-Miami Speedway earlier in the season, and coupled with a runner-up result at Virginia International Raceway and a fourth-place run last weekend at Mazda Raceway Laguna Seca, have now logged top-four finishes in each of the last five races.

"Paul did a fantastic job at the beginning of the race," Collins said, "We didn't need the later caution periods because it allowed Boris and Andy to change tyres and get back on us but, late in the race, we got lucky in some traffic and ended up winning."

With the second-place finish, Lally and Bunting extended their lead in the GT point standings, now eight points ahead of Tafel Racing's Robin Liddell and Wolf Henzler, who finished fourth at PIR in the #72 NEC Porsche GT3.

"We went down a lap early but, other than that, everything was pretty smooth," Bunting reported, "It is good to maintain our points lead and survive the heat. It was a good weekend all around."

Bunting started the #65 machine on the outside of the front row and briefly held the lead during his stint. However, after falling back to fourth in the order nearing the race's first caution period, the team found itself a lap down. However, a later caution flag shuffled the machine back onto the lead lap, and Lally was right on Collins' bumper when the chequered flag waved.

"Marc started in second place and held the lead for a little bit, and he handed me over a good car," Lally said, "As soon as I pulled out, I knew we had a good car. We were running just a little better lap times, but they would stretch us out at some points on the track. Despite that, it is good to extend the points lead."

The podium finish by Said and Thompson came in only the car's second race in Rolex Series GT competition. Henzler and Liddell were fourth, followed Matthew Alhadeff and Bill Auberlen in the #05 Sigalsport BMW M3 for Sigalsport. It was the fourth straight top-seven finish for the #05 duo, and the fifth-place run from 13th on the starting grid gave them the GT-class SunTrust Improve Your Position Award.