Who is Mark Appel? No. 1 pick in 2013 MLB Draft gets first call-up
Why Mark Appel, Perhaps the Biggest Bust in MLB History, Is
VIDEO Mark Appel, Houston's overall No. 1 draft selection, to make
Mark Appel finally makes 'surreal' MLB debut after 'bust' nightmare
Astros make Appel the one in draft
From the Bus Stop
Mark Appel was once a can't-miss prospect. Nine years later, the
VIDEO No. 1 pick Mark Appel to begin pro career with ValleyCats
Phillies call up former 1st overall pick Mark Appel