February 4, 2017 RingCentral Coliseum

Oakland, CA

In the 250 main, Austin Forkner had a big crash early on that forced him out of the race. Aaron Plessinger, Dan Reardon and others got caught up in the ensuing pileup.
Justin Hill and Martin Davalos took advantage and pulled out in front of the rest of the pack, with points leader Shane McElrath in third.
Hill pulled away and was looking for an easy win, before getting caught in a rut late in the race and allowing Davalos to pull up behind. But Hill was too much for Davalos and pulled away for a 7-second win.
After having to battle through the semi main, the 450 main looked like it was going to be a signature win for Ryan Dungey, as he squirted through the pack early and took the lead and pulled away from the field. But Eli Tomac was on fire as he overcame a rough start and worked his way through the pack, picking off riders one by one.
With 3 minutes left, Tomac finally reeled in Dungey and then pulled away himself and went on to win by 10 seconds. Cooper Webb took third for his first podium in the premier class.