The Daytona Prototype and GT championships will be on the line as the Grand-Am Rolex Sports Car Series visits Miller Motorsports Park for the season-ending SunRichGourmet.com 1000 presented by the Grand and Little America Hotels this weekend.

TELMEX Chip Ganassi Racing with Felix Sabates team-mates Scott Pruett and Memo Rojas need to drive at least 30 minutes each in the #01 Lexus Riley to share the Daytona Prototype championship. Pruett, who shared the 2004 title with Max Papis, is looking to become the first repeat champion in the Grand-Am Rolex Series' premier division. The Ganassi team has already locked up its third title, leading the #99 GAINSCO/Bob Stallings Racing Pontiac Riley team of Alex Gurney and Jon Fogarty by 38 points.

The GT championship is expected to come down to the final lap of the season, with Paul Edwards and Kelly Collins - drivers of the #07 Banner Racing Pontiac GXP.R - leading #57 Stevenson Motorsports Pontiac GXP.R co-drivers Robin Liddell and Andrew Davis by six points. Also in contention are Sylvain Tremblay and Nick Ham, who are 13 points out of the lead in the #70 SpeedSource Mazdaspeed Castrol Syntec Mazda RX-8.

Pruett and Rojas opened the year by winning the Rolex 24 at Daytona - joined by Juan Pablo Montoya and Dario Franchitti - and added five additional victories on their march to the championship. Gurney and Fogarty won only one race this year after winning seven races and the title in 2007, but are guaranteed second place in the team championship and a tie for third in the driver points.

With the top two positions in the Daytona Prototype team championship locked up, third place is up for grabs as six teams are within 18 points. The #58 Brumos Racing Porsche Riley of David Donohue and Darren Law leads team-mates JC France and Joao Barbosa in the #59 by one point. Two teams - the #60 Michael Shank Racing Ford Riley of Mark Patterson and Oswaldo Negri, along with the #61 AIM Autosport Exchange Traded Gold Ford Riley of Mark Wilkins and Brian Frisselle, are six points out of third. The #10 SunTrust Racing Pontiac Dallara of Michael Valiante and Max Angelelli is 17 points out of third, and one point ahead of the #76 Krohn Racing Pontiac Lola of Ricardo Zonta and Nic Jonsson.

The two prior runnings of the SunRichGourmet.com 1000 have featured first-time Rolex Series winners. Patterson and Negri teamed to give Michael Shank Racing its first Grand-Am victory in the 2006 inaugural event, while Jim Matthews, Marc Goossens and Ryan Hunter-Reay gave Riley-Matthews Motorsports its initial triumph last year.

Among the teams looking for its first victory is Cheever Racing with drivers Christian Fittipaldi and Antonio Garcia in the #16 Crown Royal Cask #16 Pontiac Coyote. Other pairings yet to win include John Pew and Ian James in the #6 Michael Shank Racing Ford Riley, and #7 Rum Bum Racing BMW Riley teammates Matt Plumb and Gene Sigal. In addition, the Lola chassis is looking to break through. Krohn Racing is fielding a pair of Pontiac-powered Lolas, with Tracy Krohn and Eric van de Poele in the #75 and Zonta and Jonsson in the #76.

Also up for grabs is the prestigious Jim Trueman Award. France enters the finale with a 59-point lead over Patterson in the competition among Daytona Prototype drivers who do not earn their primary income from racing.

Since the SunRichGourmet.com 1000 is the second-longest race on the Rolex Series schedule, a number of teams have added third drivers to their line-ups. Hunter-Reay returns with the defending race winners, joining Matthews and Goossens in the #91 Pontiac Riley. AIM Autosport, winners of two of the last three races, adds 2002 Champ Car titlist Cristiano da Matta to the lineup of the #61 Ford Riley, joining Wilkins and Frisselle. Brumos adds a pair of stars, 2004 Indianapolis 500 winner Buddy Rice to the #58 and five-time Rolex 24 winner Hurley Haywood to the #59.

Michael Shank Racing will be joined by recently crowned IRL Firestone Indy Lights champion Raphael Matos - teaming with John Pew and Ian James in the #6 - while 2008 Mazda Raceway Laguna Seca winner Ryan Dalziel co-drives the #60. Jimmy Vasser, the 1996 Champ Car titlist, rejoins the #99 GAINSCO/Bob Stallaing Racing entry. Alex Lloyd, the 2007 IRL Firestone Indy Lights champ, will co-drive the #01 TELMEX Lexus Riley. Other additions Burt Frisselle, joining the #77 Doran Racing Kodak Ford Dallara with Memo Gidley and Brad Jaeger, and Stephane Gregoire, in the #7 Rum Bum Racing BMW Riley with Gene Sigal and Matt Plumb.

GT point leaders Collins and Edwards led every lap in the #07 Banner Racing Pontiac GXP.R en route to winning last year's SunRichGourmet.com 1000. The pair will be looking to repeat that domination this weekend to end the season on a high note, after their once commanding point lead has been trimmed to only six points entering the finale.

Collins and Edwards won three races early in the season and held a 35-point lead after the Sahlen's Six Hours of The Glen in early June. They saw that lead shrink to only six points after Montreal's Circuit Gilles Villeneuve contest. The gap remained at six after the most recent race, New Jersey Motorsports Park, where they finished ninth.

Robin Liddell and Andrew Davis took over second position following a second-place finish at New Jersey in the #57 Pontiac GXP.R. The pair won three races this year, at Mexico City, Virginia International Raceway and Montreal, among eight podium finishes.

Nick Ham and Sylvain Tremblay, co-drivers of the #70 Mazda RX-8, dropped to third in the team standings after struggling with an oil leak at New Jersey. They now trail the leaders by 13 points. They will be looking for a reversal of fortune at Miller Motorsports Park, after being taken out on the first lap of last year's race. They won both races at Daytona in addition to the event at Barber Motorsports Park this season.

The championship trio will have plenty of competition in the finale. Porsche powerhouses TRG and Farnhacher Loles have each entered a trio of GT3s for the event, while SpeedSource entered the #69 Mazda RX-8 of Emil Assentato, Jeff Segal and Nick Longhi that won the most recent endurance race on the Rolex Series schedule, the Sahlen's Six Hours of The Glen. Also entered in a Mazda RX-8 is Grey's Anatomy star Patrick Dempsey, who shares the #40 Hyper Sport entry with Joe Foster. Terry Borcheller, the 2003 Daytona Prototype champion, shares the #72 Autohaus Pontiac GXP.R with Tim Lewis Jr.

In addition to the championship, the Bob Akin Award will be presented to the top gentleman driver in the GT class at the end of the season. Tim George Jr. enters the finale with a 189-point lead over Ted Ballou in the competition among drivers who do not earn their primary income from racing. George also enters the finale with a five-point lead over Ricardo Zonta in the battle for MESCO Building for the Future Rookie of the Year honors.

Signed on as guest drivers in the GT class are Lawson Aschenbach in the #07 Pontiac GXP.R, Patrick Long in the #67 TRG Porsche GT3, Dominik Farnbacher in the #86 Farnbacher Loles Racing Porsche GT3 and Wolf Henzler in the #87 Farnbacher Loles Racing Porsche GT3.

TRG's entry includes Salt Lake City driver John Potter, who will share the #65 TRG/Riegel Autosport Porsche with Josemanuel Gutierrez and 2005 Rolex Series GT champion Craig Stanton.