August 16, 2011 10:04 pm Philly Union's High School Sensation Zach Pfeffer is only a teenager but he is already making waves as a member of the Philadelphia Union. The Upper Dublin High School student is one of the youngest players drafted in MLS history. US & World Videos 1:31 Eagles mourn death of linebacking legend Bill Bergey 3:23 NBC Sports Philadelphia's Barrett Brooks takes you inside his kitchen for his holiday feast 3:11 Eagles honor Philadelphian making a change in the community 1:18 Tanner McKee on staying prepared in the midst of Eagles QB injuries 1:07 Vic Fangio weighs in on Eagles blowing 13-point lead in 4th quarter against Commanders