2008-09: In 10 starts for the US NTDP Under-18 nationa squad, Jack Campbell turned in a 7-0-0 record, a 1.71 goals-against average, and a .950 save percentage. In 21 starts for the Under-18 squad playing in the NAHL, Campbell logged a 14-6-1 record, a 2.52 goals-against average, and a .906 save percentage. Part of the gold medal-winning Team USA squad at the 2009 Under-18 World Championships.
2009-10: Campbell played for the US NTDP squad competing in the USHL. In 11 games, he turned in a 6-3-1 record, a 2.21 goals-against average, and a .917 save percentage. Campbell won gold with Team USA at the 2010 Under-20 World Junior Championships. Dominated the U18 World Junior Championships tournament. In six games, he posted a miniscule 0.83 GAA and a wicked .965 save percentage winning the USA the gold medal and himself the MVP honors of the tournament.
2010-11: Moved to Windsor of the Ontario League. Struggled early on especially and only played average for most of the season behind a fledgling defense and huge expectations. Very pedestrian numbers during the regular season, but in typical Campbell fashion, stepped up in the playoffs and helped spur the Spitfires into the Conference Finals. He was undone by the eventual OHL champion Owen Sound Attack, but it was a promising run. In his other big-game tourney, he was superb in the U20 World Junior Championships (1.70 GAA, .941 save pct.) earning the U.S. a bronze medal and was named the tournament’s best goaltender.
2011-12: In a disappointing season in terms of results, Campbell continued to display the potential of an elite goaltending prospect. He made his pro debut with Dallas AHL affiliate Texas as a 20-year-old following his second OHL season, appearing in 12 games and finishing 4-7 with 1 shutout and a 3.02 goals against and .912 save percentage. The Stars missed the AHL playoffs; finishing last in the West Division. Campbell played in his third World Junior Championship tournament with the USA, which finished in seventh place. Playing five of six games, Campbell was 3-2 with a 2.62 goals against and .906 save percentage. In OHL play, he was obtained by Sault Ste. Marie from Windsor in a mid-season trade to bolster the Greyhounds’ playoff push; which ultimately fell short. In 46 OHL games (12 with the Spitfires), he was 21-22 with 7 losses in overtime and 2 shutouts. Campbell finished the OHL season with a 3.46 goals against and .896 save percentage.
2012-13: Campbell appeared in 40 games for Dallas AHL affiliate Texas in his first pro season. Due in part to the recalls of Richard Bachman and Cristopher Nilstorp to the NHL, he handled the bulk of the goaltending in the second half and was 19-13-3 with 2 shutouts. He had a 2.65 goals against and .905 save percentage. The Texas Stars finished first in the South Division and reached the second round in the playoffs. Campbell did not see any action in the playoffs as Nilstorp started all nine games.
2013-14: Campbelll made the first start of his NHL career during an emergency call-up in October. He spent most of the season with Dallas AHL affiliate Texas — missing a good portion of the year while dealing with a nagging leg injury. He faced 47 shots and allowed six goals in a 6-3 loss at Anaheim in his only NHL start. He suffered the knee injury at the end of October after two starts with the Texas Stars — playing three games in December and then being out of the lineup for Texas again until March. In 16 regular season AHL games he was 12-2-2 with four shutouts and had a 1.49 goals against and .942 save percentage. Texas finished first in the West Division and won the Calder Cup. Campbell spent most of the playoffs backing up Swedish veteran Cristopher Nilstorp. In four playoff games he was 2-1 with a 2.54 goals against and 2.54 save percentage.
Campbell is an athletic goaltender with great reflexes. He never gives up on plays and competes hard on every shot. Sometimes he overplays the on-coming rush and can get into trouble. Campbell has a very good glove and blocker. He stickhandles very well and is a fine outlet passer. A big pressure goalie during this junior carer, he shows up majorly in big game situations, loves to compete, has a winning attitude with confidence and is always looking to improve. As with many young goalies Campbell is still inconsistency at times but should allow fewer untimely soft goals as he continues to mature.
Campbell attended camp with Dallas before being assigned to Texas to start the 2014-15 season. Splitting time with free agent Jussi Rynnas before the rookie from Finland was recalled by Dallas, he won two of his first three starts but has struggled since. Campbell's struggles can be partially attributed a Texas lineup that has several new players. Recently demoted veteran Anders Lindback has played well since joining Texas which further complicates the situation for Campbell. In terms of potential, Campbell was projected to be a starting NHL goaltender similar to former Islander Rick DiPietro. Now in the third year of his original entry-level contract he must show progress this season if he is to continue on that career path.