The Spokane Shock were 30 minutes into practice Tuesday when quarterback Bill Stull approached head coach Rob Keefe with a smile on his face. Stull, still on crutches after injuring his left knee in his first start Saturday, informed the coach that MRI results indicated he didn’t suffer a serious injury. Stull has a bone bruise and slight sprain. Recovery time can vary, but Stull isn’t expected to go on injured reserve, a minimum four-week stint. He’s not expected to play Friday against Tampa Bay.