Wei-Yin Chen blanked the Mariners for eight innings Thursday, combining with Darren O'Day on a five-hitter. Chen fired seven shutout innings against the Red Sox back on June 11. Since then, he'd allowed three earned runs or more in five of six starts, and didn't surrender less than two in any. That stretch saw his ERA spike from 3.76 to 4.21. It's back down to 3.96, a number he'll defend against the Angels next week.