Early years

Stephen attended Long Island Lutheran Middle and High School in Brookville, New York, where he played football and basketball. In football, he recorded 57 tackles and 12 sacks along with two blocked field goals in his senior season, serving as the captain, leading his team to a 7-2 record. He was selected a First Team All-American Lutheran.

College career

Stephen played college football at Connecticut from to 2009 to 2014, where he was named a team captain prior to his senior season and also winning team MVP following the season. He was selected to the All-American Athletic Conference Second Team also in his senior season. Stephen was selected and participated in the 2014 Senior Bowl following the season at Connecticut.

Professional career

2014 NFL Combine

Pre-draft measurables

Ht	Wt	40-yd dash	10-yd split	20-yd split	20-ss	3-cone	Vert	Broad	BP
6 ft 5 in	309 lb	5.25 s	1.83 s	3.02 s	4.89 s	7.81 s	30.5 in	8 ft 7 in	25 reps

Minnesota Vikings

Stephen was drafted by the Minnesota Vikings in the 7th round (220th overall pick) of the 2014 NFL Draft. He made his professional debut in the Vikings' season opener against the St. Louis Rams on September 7, 2014.

On October 18, 2015, Stephen suffered a season ending toe injury against the Kansas City Chiefs and was carted off the field. The Vikings would go on to place him on the IR list on October 20, 2015.

[ Source: Wikipedia ]