Autograph #328 - Part of our personal collection. 2007 Bowman Heritage Signs of Greatness #SG-SJ Seth Johnston AU Johnston was drafted by the San Diego Padres in the 5th round of the 2005 MLB June Amateur Draft from University of Texas. He played in the Padres minor league system till 2009 getting as high as AAA Portland Beavers in 2009. #autographcardcollecting #autographcollectingwdannyb #autographs #autographcollection #milb #Baseball #sethjohnston #sandiegopadres #bowman #bowmanheritage #BoninSportsCards #TradingCards