Here's the fastest practice lap times from the Lucas Oil AMA Pro Motocross Championship practice sessions at Thunder Valley in Lakewood, CO.

Josh Grant was the quickest in the 450 class aboard his JGRMX Toyota/Yamaha YZ450F, just edging out home state favorite Andrew Short. Click image for a larger version.

450

1. Josh Grant (Yamaha) 2:14.140
2. Andrew Short (Honda) 2:14.210
3. Ivan Tedesco (Honda) 2:14.454
4. Jake Moss (Honda) 2:14.195
5. Cody Cooper (Yamaha) 2:16.418
6. Michael Byrne (Suzuki) 2:16.868
7. Kyle Summers (Honda) 2:16.988
8. Tommy Hahn (Kawasaki) 2:17.190
9. Chris Blose (Honda) 2:17.208
10. Timmy Ferry (Kawasaki) 2:17.250

Mike Alessi won't have a great starting spot on the gate, but easily qualified, despite his recent broken kneecap. Click image for a larger version.

Christophe Pourcel laid down the fastest lap in the 250 class ahead of a returning Martin Davalos. Click image for a larger version.

250

1. Christophe Pourcel (Kawasaki) 2:15.304
2. Martin Davalos (KTM) 2:15.700
3. Broc Tickle (Yamaha) 2:16.486
4. Justin Barcia (Honda) 2:16.629
5. Wil Hahn (KTM) 2:16.864
6. Matt Lemoine (Yamaha) 2:16.906
7. Tyla Rattray (Kawasaki) 2:17.330
8. Luke George (Kawasaki) 2:17.644
9. Sean Borkenhagen (Honda) 2:17.776
10. Jake Weimer (Kawasaki) 2:17.781