At Princeton
2012-13: went 14-12 on the season … earned first spot on the EIWA podium with sixth-place finish at 174 pounds … defeated third-seeded and 13th-ranked Greg Zannetti of Rutgers in opening round of EIWAs; missed qualifying for NCAA Championships by one point in consolation semifinals … won 10 of final 16 matches, including home sweep of Brown and Harvard during Alumni Weekend … competed at Midlands Championships. 2011-12: won six matches at 174 pounds, including four of his final five … picked up 6-3 victory over Kyle Czarnecki of Boston University late in season; victory nearly propelled Tigers in eventual 22-21 loss. 2010-11: earned starting spot at 174 pounds before first week of freshman season and recorded winning record (13-12) … opened career with win at Central Jersey Open and placed at both Binghamton Open and Keystone Open … earned regular season league wins over both American and Franklin & Marshall … suffered injury that cost him all of February … returned in time to represent Princeton at 174 in the EIWA Championships and won a consolation match against Brown's Jeffrey Lemmer.

At Wallkill Valley
Won 2010 New Jersey state wrestling championship (171 pounds) … ranked as one of the nation's top five recruits at his weight class … went undefeated as a senior and recorded 154-12 high school record … three-time regional champion … reached 2009 state final … two-time New Jersey all-star event champion … all-time wins leader in Sussex County … three-time team captain … class valedictorian … National Honor Society Sargeant At Arms.

Personal
Born June 17, 1992 … son of Tim and Susan Callahan … father is an account manager; mother is a registered nurse … has an older brother, Sean.