The disbelief radiated off of Vanderbilt starter Connor Fennell as Tim Corbin paced out from the visitors’ dugout as if to indicate that his Friday-night starter’s work for the night was complete.  Fennell was only 70 pitches into his outing and felt as if he was flowing before Corbin emerged from the dugout to take the ball out of Fennell’s hand and put it in left-hander Jakob Schultz’--a decision that Fennell clearly disagreed with.  The reasoning, whether correct or not, wasn’t all that difficult to see. Fennell has generally struggled to get through lineups the third time this season, has already built a large workload and isn’t a lefty. Fennell didn’t appear to care for any of those reasons, though. "Why am I coming out?…