Graves Yamaha’s Jason DiSalvo collided with Kawasaki’s Roger Hayden in turn 11 during Sunday morning’s AMA Superstock practice session. DiSalvo and Hayden both walked away from the scene. DiSalvo, who will start Sunday’s Superstock race from pole position, ended the warm-up session with the fastest time, a 1:37.924. Provisional Sunday Morning AMA Superstock Practice Times: 1. Jason DiSalvo, Yamaha, 1:37.924 2. Jamie Hacking, Yamaha, 1:38.189 3. Aaron Yates, Suzuki, 1:38.289 4. Aaron Gobert, Yamaha, 1:38.687 5. Tommy Hayden, Kawasaki, 1:38.847 6. Steve Rapp, Suzuki, 1:39.082 7. Damon Buckmaster, Yamaha, 1:39.217 8. Roger Hayden, Kawasaki, 1:39.228 9. Jake Holden, Suzuki, 1:39.287 10. Geoff May, Suzuki, 1:39.769 11. Eric Wood, Suzuki, 1:40.463 12. John Haner, Suzuki, 1:40.783 13. Corey Eaton, Suzuki, 1:41.797 14. Brien Whitlock, Suzuki, 1:42.708 15. Blake Young, Suzuki, 1:42.724 16. Mark Miller, Suzuki, 1:43.037 17. Cory Call, Kawasaki, 1:43.173 18. J.J. Roetlin, Suzuki, 1:43.275 19. Eli Edwards, Suzuki, 1:43.634 20. Tom Montano, Suzuki, 1:43.706