While strolling through the pits in San Francisco, we spotted Corey, Mike Brown's mechanic, working on the Rockstar Energy Suzuki RM250. With Jeremy McGrath and David Vuillemin switching to 450s last weekend, and www.FreeNissan.com privateer Robbie Reynard not making the main on his CR250, Brown was the only two-stroke to race in Anaheim. And apparently, that won't last long. Brown tested an RM-Z450 this week and, as Corey said, "The stopwatch doesn't lie."

Brownie will be on a four-stroke for Anaheim 3. So tonight's supercross in San Francisco might be the swan song for the two-stroke motocross bike. Good luck, Brownie!