The 28-year-old Warfield pleaded no contest in January to a felony charge of driving under the influence.
The charge was a felony because Warfield has two prior DUI convictions. As part of a plea agreement with Johnson County prosecutors, Warfield was also ordered to pay a $1,500 fine and perform 100 hours of community service. He will be on probation for a year.
In exchange for the no-contest plea, prosecutors dropped misdemeanor counts of driving with a suspended license and having no proof of insurance.
The charge stemmed from a traffic stop on Sept. 20, 2004, in the Kansas City suburb of Overland Park. Police said Warfield had a blood alcohol level of .189 percent, more than double Kansas' .08 percent legal limit.