The left-hander was arrested on Oct. 14 in downtown Oxford, where he played college baseball for Ole Miss.
Pomeranz retweeted his sports agency, Beverly Hills Sports Council, on Friday, which announced on Twitter the charge had been dropped. He said in a text to The Associated Press Wednesday "all there really is to be said is on my twitter." Pomeranz tweeted he was "focused on baseball & looking forward to" spring training.
Oxford Municipal Court would not confirm the charges had been dropped.
The 23-year-old Pomeranz made his major league debut in September. He was 2-1 with a 5.40 ERA in four starts, striking out 13 and walking five in 18 1/3 innings.