He didn't have his best stuff tonight. His command wasn't nearly what it has been in the past. He had a four-run cushion, wasn't really able to capitalize on it. But he still left the game with a lead, so it wasn't a lost effort by any means. He battled.
Those are called shutdown innings. That's a big part of baseball. When you score, your opportunity to shut out the other team the next inning is there and you need to capitalize on them.