Andrew Knapp, image- Jay Floyd   Following a breakout season in 2015, catcher Andrew Knapp   continued to take strides and looked to be near-ready to make a big league splash during his 2016 campaign.    In 2013 the switch-hitting Knapp was the Phillies' 2nd round draft choice out of the University of  California and made his professional debut, tallying a .253  batting average with four home runs, 23 RBI and seven steals in 62 games  for the short-season Class A Williamsport Crosscutters.   That off-season, the righty throwing Knapp required Tommy John   surgery to repair a damaged elbow.  He was back on the field by the  following May, getting at bats, but sitting out on defense for some time  to allow additional recovery for his elbow.  He joined the Class A  Advanced Clearwater Threshers during the fifth week of the season.  It  was mid-June by the time he would play on the defensive side of the  game.   Upon joining the Threshers, Knapp struggled with the bat, posting a .157...