2008-09: Seth Ambroz played for the Omaha Lancers of the USHL, appearing in 60 games for that club. He scored 14 goals and added 17 assists for 31 points while also picking up 88 penalty minutes. In 3 playoff games, Ambroz registered no points.
2009-10: In 56 games for the Omaha Lancers, Ambroz scored 22 goals and added 27 assists for 49 points while also adding on 188 penalty minutes. In 8 playoff games, Ambroz scored 4 goals and added 2 assists for 6 points. Ambroz was named to the USHL All-Rookie Team.
2010-11: In 56 games for the Lancers, Ambroz scored 24 goals and added 22 assists for 46 points to go along with 89 penatly minutes. In 3 playoff games, Ambroz scored 2 goals. Ambroz played for the USA at the World Junior A Challenge where he scored 2 goals and added 3 assists for 5 points in 4 games. Ranked 31st amongst North American skaters in the Central Scouting final rankings, he was selected by Columbus in the fifth round (128th overall) in the 2011 NHL Draft.
2011-12: In his first year with the Golden Gophers, Ambroz was a nonfactor. He had eight points in 41 games, netting 5 goals with 3 assists. The Gophers finished first in the WCHA in the regular season. After an upset loss to North Dakota in the WCHA Final Five, Minnesota rebounded to capture the NCAA West Regional, defeating Boston University and avenging the loss to the Fighting Sioux. The Gophers lost to Boston College, 6-1, in the Frozen Four semifinals.
2012-13: Ambroz played in 38 of 40 games for Minnesota as a sophomore. He scored 9 goals with 7 assists and was plus-11 with 22 penalty minutes. The Gophers finished first in the WCHA for the second straight year in their final year in the league but ended the season with back-to-back losses. Colorado College defeated the Gophers in the WCHA semifinals and Minnesota lost 3-2 to eventual national champion Yale in the NCAA West regional semifinals.
2013-14: Ambroz scored a career-high 14 goals in his junior season with Minnesota as the Gophers finished first in the newly-formed Big Ten hockey conference and advanced to the Frozen Four championship game. Frequently teamed with left wing Tom Serratore and center Travis Boyd as Minnesota head coach Don Lucia mixed and matched lines, Ambroz added 9 assists and was plus-8 with 26 penalty minutes in 41 games. After an upset loss to Ohio State in the Big Ten tournament semifinals, Minnesota defeated Robert Morris and St. Cloud State to capture the NCAA West Regional and then defeated North Dakota, 2-1, with a game-winning short-handed goal in the game’s final second. Union defeated Minnesota, 7-4, in the championship game.
Ambroz has size and a nice shot, but needs to work on his awareness. He is a big body on the ice and can develop into a great power forward once he learns proper positioning in the crease. He scored a career-high 14 goals in his junior season at the University of Minnesota but his role at the pro level appears as if it will be that of a lower line, checking forward.
Ambroz is in his senior season at the University of Minnesota in 2014-15. After scoring a career-high 14 goals in his junior season he is once again playing in a checking, third line role for the Golden Gophers and had three points in his first 13 games of the season. Viewed as a power forward prospect coming out of the USHL due to his size and skill set, Ambroz never truly flourished while in college and it is doubtful that he ever produces the type of offensive numbers once envisioned. The Blue Jackets must sign him by August 2015 or he would become an unrestricted free agent. Whether he is signed with the Blue Jackets or begins his career elsewhere he will likely spend time at the minor level before being prepared to play in the NHL.