Wilton Lopez is unavailable to pitch Tuesday after feeling some tightness in his right elbow while throwing batting practice. Lopez's run as the Astros' closer has been halted before it even began. The team don't consider the tightness to be a big deal, but the fact that he's pitching with a sprained ulnar collateral ligament and is now experiencing discomfort should give fantasy owners pause. It's not clear who might handle a potential save chance Tuesday.