Chen (11-7) allowed two singles, struck out eight and walked one. He was 0-2 with a 7.94 ERA in his previous two starts.
Chen yielded a leadoff single to Ben Revere, who stole second. He was the only Twin to get past first base against the left-hander. Danny Valencia singled in the fifth for Minnesota’s only other hit off Chen.
Luke Hochevar pitches in the series finale Wednesday afternoon with Royals pre-game at 2:35pm on KAYS (1400-AM).