2009-10: Mark Alt attended Cretin-Derham High School in Minnesota. Scored 6 goals with 19 assists in 22 regular season games with 12 PIM. Added five assists in two Section 3AA games as Cretin-Derham defeated Eastview before falling, 2-1, to Woodbury, a team they had beaten earlier. Alt also played in the Upper Midwest High School Elite League with 1 assist in seven games for Team North East while at the same time playing quarterback for his high school football team. Invited to USA Hockey’s 2010 junior evaluation camp in Lake Placid.
2010-11: Alt appeared in 35 of 36 games for the University of Minnesota as a freshman on a Gophers team that finished an uncharacteristic fifth in the WCHA. After assisting on the game-winning goal in his first game, an early season win over Massachusetts, Alt finished with 2 goals and 8 assists and was +3 with 22 PMs.
2011-12: Alt stepped into a leadership role for the University of Minnesota as a sophomore as part of a group of underclassmen defensemen who were key to the Gophers’ first-place finish in the WCHA regular season. He played 43 games and was plus-18 with 5 goals and 17 assists and had 43 penalty minutes. The Gophers fell to North Dakota in the WCHA semifinals but avenged that loss in the NCAA West final to reach the Frozen Four.
2012-13: Alt signed a three-year entry-level contract with the Flyers in April of 2013 following his junior season at Minnesota and made his pro debut with Philadelphia’s AHL affiliate in Adirondack. Obtained by the Flyers in January as part of the Brian Boucher trade, he skated in six games with the Phantoms, scoring 1 goal with 1 assist, and was minus-1 with 2 penalty minutes. Adirondack missed the playoffs after finishing last in the Northeast Division. The Gophers finished tied for first in the WCHA with St. Cloud State in what would be Alt’s final season of college hockey. Partnered with freshman Mike Reilly (Columbus) for much of the season, Alt had 7 assists and was plus-18 with 20 penalty minutes in 39 games. Minnesota’s season came to a disappointing ending with a loss to Colorado College in the WCHA semifinals and an overtime loss to eventual national champion Yale in the NCAA West Regional.
2013-14: Alt skated for Flyers’ AHL affiliate Adirondack in his first pro season. One of three Phantoms defensemen with 25 points or more, he scored 4 goals with 22 assists in 75 games and was minus-16 with 31 penalty minutes. Adirondack missed the playoffs; finishing fourth in the Northeast Division.
2014-15: Alt made his NHL debut on March 28th in a game against the San Jose Sharks, spending most his second pro season with Flyers’ AHL affiliate Lehigh Valley. He was -1 with no points nor penalties in 9:25 minutes of ice time in his only game with Philadelphia. An early season shoulder injury kept him out of the Phantoms’ lineup for most of November and he was injured again in December, missing more time. He played 44 games with Lehigh Valley, finishing -15 with 2 goals, 8 assists and 18 penalty minutes. The Phantoms missed the AHL playoffs, finishing fourth in the East Division.
2015-16: Alt skated in 72 of 76 games for the AHL’s Lehigh Valley Phantoms in his third pro season. He scored 4 goals with 15 assists and was +11 with 46 penalty minutes. The Phantoms finished seventh in the Atlantic Division, missing the AHL playoffs.
Alt was a two-sport star in high school, as he led Cretin-Derham to a state title as a football quarterback. The son of former Kansas City Chiefs offensive lineman Jon Alt, he was entertaining offers to play football in college until he committed to playing hockey at the University of Minnesota. Like his father, Alt is a tall man, but despite his height is a fluid skater with good speed and agility. He is still developing in terms of tactical play and positioning but is a strong two-way player.
Alt had a bounce back season for the AHL's Lehigh Valley Phantoms in 2015-16, skating in 72 games after missing significant time the previous year and finishing +11, the best mark of his three-year pro career. At the end of his original entry-level contract, he would become an unrestricted free agent if not tendered a qualifying offer by the Flyers. With high profile prospects Ivan Provorov and Travis Sanheim expected to begin their pro careers the defense picture in the Philadelphia organization could be a crowded one. Alt's play with the Phantoms suggests he could have some potential in a lower line role — though possibly with another club.