Usually a position player ending the game on the mound is a bad sign for a team. Instead, San Francisco Giants shortstop Brandon Crawford throwing a scoreless ninth inning Sunday against the Chicago Cubs represented a sour way to cap a 4-6 mark on their three-city 10-game West Coast trip. The Cubs salvaged the trip with the series win in San Francisco, though they wasted a chance to sweep the Giants in a 13-3 blowout loss Sunday at Oracle Park. “When we play good defense and get good pitching we’re in games,” manager David Ross said afterward.