2010 - SDC C's Avarice (left) and PiKA A's Nemesis (right) collide at the start of the Freeroll in Men's Prelims Heat 10, leading to an SDC DQ. Credit: Joseph Anderson

2010 - Spirit A's Zulu Machafuko in the Freeroll in Men's Prelims Heat 9. Credit: Joseph Anderson

2010 - SigEp B's Annelie Niebuhr shoves Peregrine to Melissa Sidran at the Hill 1-2 Transition in Lane 3 of Women's Prelims Heat 3. Credit: Joseph Anderson

2010 - Spirit B's Daymanuel Sampson pushes Haraka up Hill 5 in Men's Prelims Heat 3. Credit: Joseph Anderson

2010 - Hill 5 of Men's Prelims Heat 10, with SDC C's Phil Ajoux pushing Avarice (left) and PiKA A's Marquis Woods pushing Nemesis (right). Credit: Joseph Anderson

2010 - Fringe C's Nicole Rappin pushes Blizzard up Hill 5 in Women's Prelims Heat 1. Credit: Joseph Anderson

2010- CIA C's Jake Reid pushes Firebird up Hill 2 in Lane 3 of Men's Prelims Heat 2. Credit: Joseph Anderson

2010 - Fringe C's Nikhil George Poonthottam pushes Bantam up Hill 5 in Men's Prelims Heat 2. Credit: Joseph Anderson

2010 - SigEp A's Josh Grossman pushes Barracuda up Hill 5 in Men's Prelims Heat 6. Credit; Joseph Anderson

2010 - Beta A's Cody McMarlin pushes Problem Child up Hill 5 in Men's Prelims Heat 8. Credit: Joseph Anderson

2010 - Spirit A's Zulu Machafuko spins out in the Chute of Men's Prelims Heat 9 as its back left tire lays in the Chute. Credit: Joseph Anderson