Chen's scheduled start Tuesday versus the Yankees has been postponed due to a rainout, Marly Rivera of ESPN Deportes reports. Instead of fitting in a doubleheader Wednesday, the divisional rivals will delay the twin bill to Sept. 12, Eric Boland of Newsday reports. It's unclear if Chen will be skipped or push Tillman back in the rotation, but Chen boasts a 2.84 ERA, 1.105 WHIP, and 7.46 K/9 in 25.1 innings (four nods) since the break.