|Born|| April 18, 1992 |
|Height||6 ft 4 in (1.93 m)|
|Weight||234 lb (106 kg; 16 st 10 lb)|
|NHL team||Dallas Stars|
|NHL Draft|| 60th overall, 2010|
As a junior, Stephen played the 2009–10 season with the USA Hockey National Team Development Program. He was a member of the gold medal winning team at the 2010 IIHF World U18 Championships.
He then played four seasons (2010-2014) of NCAA Division I hockey with the Notre Dame Fighting Irish men's ice hockey team, helping Notre Dame to win the 2013 CCHA Men's Ice Hockey Tournament.
As a sophomore, Stephen was selected to compte with Team USA at the 2012 World Junior Ice Hockey Championships, and in his senior year, his outstanding play was recognized when he was named to the Hockey East Second All-Star Team and also to the 2014 Hockey East All Tournament Team.
On April 2, 2014, the Chicago Blackhawks signed Stephen to a two-year, entry-level contract to begin with the 2014–15 NHL season, but he was immediately assigned to begin his professional career with the Blackhawk's AHL affiliate, the Rockford IceHogs on a professional try-out contract.
After attending his first training camp with the Stars, Stephen was re-assigned to AHL affiliate, the Texas Stars, to begin the 2015–16 season. Having passed his previous season's offensive numbers, he received his first NHL recall by the Dallas Stars and made his debut in a 5-2 victory fittingly over the Chicago Blackhawks on March 12, 2016.
On March 18, 2016, Stephen was signed by the Dallas Stars to a two-year contract extension.
Regular season and playoffsEdit
|2008–09||USA National Development Team||NAHL||31||3||5||8||30||—||—||—||—||—|
|2009–10||USA National Development Team||USHL||23||1||7||8||29||—||—||—||—||—|
|IIHF World U18 Championship Gold Medal (Team USA)||2010|
|CCHA Men's Ice Hockey Tournament Champion||2013|
|CCHA All-Tournament Team||2013|
|Hockey East Second All-Star Team||2014|
|Hockey East All-Tournament Team||2014|