"Terrific impression," manager Mike Matheny said of Greenwood. "The conversation we had with him was, 'Nick, you have to realize what you did was not just coming in and filling in a spot. You bailed us out of some huge predicaments. You really impressed us every time we gave you a chance.' It was nice having that safety valve at the end. He was very resilient. He got outs. That's the bottom line."
Greenwood, 26, posted a 4.74 ERA over 19 innings. He positioned himself as a strong September call-up candidate if he is not summoned before then.
Jenifer Langosch is a reporter for MLB.com. Read her blog, By Gosh, It's Langosch, and follow her on Twitter @LangoschMLB. This story was not subject to the approval of Major League Baseball or its clubs.