Jon Niese left Sunday's start against the Cardinals with left elbow discomfort. Yikes. Niese dealt with a sore shoulder earlier in camp, and now his elbow is giving him problems. Kristie Ackert of the New York Daily News noted that the lefty has been wearing a neoprene sleeve the last few days, so it appears the elbow might have been aching before Sunday's outing. It's not clear at this point how long he might be sidelined.