Tony Stewart released from hospital

DARLINGTON, S.C. - Tony Stewart was released from a hospital Monday, a day after he was injured in a wreck at Darlington Raceway. <br> <br> Stewart underwent an MRI exam on Monday morning before doctors released him from a Florence hospital, track spokeswoman Cathy Mock said. Results of the test were negative, she said. <br> <br> Stewart, 30, was injured in a crash while he was leading Sunday&#39;s Carolina Dodge Sealers 400. He was approaching Buckshot Jones to make a pass on lap 227, Jones&#39; car bobbled and moved into Stewart&#39;s path. The two collided, sending Stewart&#39;s Pontiac into the wall. Gordon hit him from behind. <br> <br> After hitting the wall, Stewart&#39;s car went back down the track as cars continued to collect behind him and he was hit hard on the passenger side by Jimmy Spencer. <br> <br> He was briefly knocked unconscious and when he came to was complaining of lower back pain and numbness and tingling in his left foot. <br> <br> He was airlifted to the hospital and tests Sunday night were negative, but he was held overnight for observation.