Cornerback Zack Bowman was switched to safety earlier in the offseason, but he was back at corner as the Bears' OTAs kicked off, starting at on the left side in place of Charles Tillman, who is still rehabbing from shoulder surgery. Nate Vasher was the starter on the right side, but he will have to prove he deserves to remain there after two disappointing and injury-riddled seasons. He could be pushed by rookie fourth-rounder D.J. Moore. "I'm coming out every day and working," Vasher said. "We'll just see what happens." Source: FOXSports.com
