Chen (3-3) scattered five hits and didn't allow a walk, striking out three en route to the victory.
Nick Markakis went 2-for-4 with two runs scored and Manny Machado provided three hits for the winners.
Twins starter Scott Diamond (3-3) was lit up for six runs on nine hits in a 5 2/3-inning effort.
Toddler uninjured after being knocked over by Obama family dog
Martin Bashir resigns from MSNBC over Sarah Palin comments