Olympic swimmer Michael Phelps, 24, was involved in a crash of his Cadillac Escalade and a Honda Accord Thursday night in Baltimore, but he walked away uninjured. The other driver was also uninjured. The Accord and a parked vehicle were severely damaged. Alcohol was not involved in the incident, according to Baltimore police. In 2004, Phelps pleaded guilty to driving while impaired and received 18 months' probation after running a stop sign. (Photo: WENN)