Appel eager to get going
2013 MLB DRAFT: FIRST ROUND ANALYSIS — College Baseball, MLB Draft, Prospects - Baseball America
Will Mark Appel be the first pick in the MLB Draft? - Rule Of Tree
Astros' Cristian Javier, pair of relievers combine to no-hit red-hot Yankees - The Boston Globe
Astros sign No. 1 overall pick Appel
Former No. 1 MLB draft pick Mark Appel attempting comeback with Phillies
Redrafting 2013 MLB Draft: Aaron Judge goes No. 1, where are the top picks now?
Report: Houston Astros Sign Mark Appel Under Slot Value - Pirates Prospects
What the Heck, Bobby?: An Interview with Astros RHP Mark Appel
Former No. 1 pick Mark Appel makes 'surreal' MLB debut at age 30, pitches scoreless 9th for Philadelphia Phillies - ESPN
Appel debut a thrill for 'Cats
Faith, family help Astros prospect Appel endure early struggles
Peter Moylan loved Mark Appel while on Astros, Farm to Fame