He was also an All-Ivy league performer in soccer and earned Princeton co-athlete of the year (all-sport) honors as a senior.

He is also a three-time Team USA representative and two-time World Lacrosse Championship gold medalist.

He first got involved in lacrosse at about the age of 12 or 13 when his sister brought home the Brine Lightning stick that he began to play with.

[3] Striebel first started playing lacrosse when he was a youth for Jeff Coulson, owner of Indoor Action Sports, in Greenfield, Massachusetts.

[5] At Princeton he was a two-time honorable mention USILA All-American Team selection in 2000 and 2001.

[11] During his four-year career, Princeton went undefeated in Ivy League Conference play with consecutive 6–0 records.

[13] In Striebel's 2001 senior season, the arrival of freshman Ryan Boyle necessitated that he move from attack to midfield.

[14] Striebel had previously been orchestrating the Princeton offense from behind the goal, but on March 25, 2001, head coach Bill Tierney made the switch.

[14] During the 2000 NCAA tournament, Striebel scored two goals in the quarterfinals 10–7 victory against Maryland,[16] and he added another in the 13–7 championship game loss to Syracuse.

[27][28] As a senior, he was honored as one of the three athletes of the year on campus (along with Dennis Norman and Scott Denbo)[29] Striebel began his career in the league's inaugural 2001 MLL season with the Bridgeport Barrage and stayed with the team as it remained in Bridgeport, Connecticut until the 2003 season.

[4] In the 2004 championship game, he scored what the Baltimore Sun described as the clinching goal in the 13–11 victory over the Boston Cannons.

[4] In the 2002 World Lacrosse Championship semifinal match against the Iroquois Nation, Striebel scored a goal in the 18–8 victory.