Quick outs or quick hook: Surge of stymied no-hitters not evidence of pitchers being babied

Miami Marlins pitcher Wei-Yin Chen was pulled from his start against the Seattle Mariners on Tuesday night despite going seven innings without yielding a hit. The foiled no-no is the latest in a cluster of in-progress no-hitters cut short by managers yanking starters, but that's not evidence that pitchers are being babied.