Yamaha riders Cal Crutchlow and James Toseland put the hammer down in Superpole today, leaving no doubt of the potential of the 2010 R1 in their hands as they took pole and second on the grid respectively ahead of tomorrow's two races at the Kyalami circuit. The ongoing development of the Yamaha Sterilgarda team which had been evident from Assen was clear to see in this afternoon's Superpole heats, with both riders going under the lap record set by Ben Spies last year.