Motorsports this weekend: May 13-14

A busy racing weekend, particularly for open-wheel fans!

North American TV broadcast times and channels from tvracer.com, all times shown as Eastern.

American Le Mans Series: Lone Star Grand Prix, Houston
A rare visit to a street circuit for the ALMS is proving tough for Champion Racing's venerable Audi R8, which only managed a fourth-place grid spot in qualifying, behind pole-sitter James Weaver's Lola (right), and the two LMP2 Porsche RS Spyders of Penske Racing. The much lighter LMP2 cars should have a good shot at an outright victory on short, tight street circuits like Houston's Reliant Park - if they can survive the bumps. Despite a recently-imposed ALMS weight penalty, the GM Racing Corvettes qualified one-two in GT1, less than a second ahead of the two Aston Martin DBR9s. Home town heroes Risi Competizione put their Ferrari F430GT at the top of the GT2 grid, with the top five GT2 cars all within a second.

The race is Friday night in Houston, and on TV Saturday. If you can't wait, listen to ALMS live radio and watch live timing and scoring at www.americanlemans.com.

Saturday, 1pm, CBS [delayed broadcast from Friday - beware spoilers!]

Lots more racing action after the jump.... Formula 1: Spanish Grand Prix, Valencia
World champion Fernando Alonso's home GP is this weekend. The race sees the race debut of Franck Montagny for Super Aguri (the FIA having pulled Yuji Ide's superlicence). Both Montagny and BMW-Sauber's Jacques Villeneuve will score 10-place grid penalties for Sunday's race - Montagny's Honda blowing in practice and Villeneuve's BMW reportedly dropped in transit. Honda test driver Anthony Davidson topped the charts in Friday practice.

Sunday, 12pm, CBS [same day delayed broadcast - watch out for spoilers!]
Bonus! Catch the GP2 support race (F1's stars of tomorrow) live, Sunday 6am, SPEED Channel

Rolex Sports Car Series: GAINSCO Grand Prix, Phoenix
The prototypes and sports cars return to the cage-match environment of Phoenix International Raceway and its mickey-mouse infield road course. Guaranteed to be action-packed with lots of NASCAR-style beatin' and bangin'.

Sunday, 3pm, SPEED Channel (Rolex SCS)
Sunday, 1pm, SPEED Channel (Grand Am Cup)
[both races are tape-delayed from Saturday - watch out for spoilers]

MotoGP: Polini Grand Prix of China, Shanghai
So far Valentino Rossi's Yamaha is on top of the practice charts, enjoying a rainy repeat of last year's soggy Shanghai event. American Nicky Hayden continues his fine season, running in the top five in practice Friday. Video clips of Friday's practice are up on motogp.com.

Sunday, 6pm, SPEED Channel

IndyCar Series: Indianapolis 500 Qualifying
It's May, so we must be in Indy. This year marks the 90th running of the Indy 500, and Saturday is Pole Day! ESPN2 and ABC have hours of live coverage this weekend. Practice Wednesday and Thursday were shut down by rain, and the forecast through Saturday is cold and wet. Expect to hear lots of historical anecdotes and to watch plenty of track drying if you tune in.

Pole Day qualifying: Saturday 12pm ESPN2, Saturday 3pm ABC
Qualifying: Sunday 12pm, Sunday 6pm, ESPN2

NASCAR Nextel Cup: Dodge Charger 500, Darlington
"The Lady in Black" welcomes the Cup crowd this weekend for a race under the lights. Watch for Michael Waltrip to name his 2007 Toyota teammate on Saturday, with with Dale Jarrett widely expected to get the nod. The venerable 1.3-mile circuit is only on the NASCAR schedule for one weekend a year now, so if you're a fan of NASCAR history and tradition, you probably won't want to miss this one.

Saturday, 6:30pm, FOX

Champ Car: Grand Prix of Houston
A typically bumpy street race around the Houston Astrodome will see points leader Bruno Junqueira start from the front row, after topping first-round qualifying Thursday. Sebastien Bourdais actually set the fastest time, but his time was disallowed after his car failed tech inspection. Saturday night's race should be a wild one, if the red flag-plagued first qualifying session is anything to go by.
Saturday, 9pm, SPEED Channel

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