Thomas Harley Bio
Thomas Harley (born August 19, 2001) is an American-born Canadian professional ice hockey defenceman for the Dallas Stars of the National Hockey League (NHL). He was drafted 18th overall by the Dallas Stars in the first round of the 2019 NHL entry draft. Standing 6 feet 3 inches tall and weighing roughly 215 pounds, Harley has developed into a reliable two-way blueliner known for his skating, vision, and offensive contribution from the back end.
Early Life and Background
Thomas Harley was born on August 19, 2001, in Syracuse, New York, to Edmonton-born parents Brian and Stephanie. He was raised in an athletic household, as his father and three siblings all played ice hockey at competitive levels. His father, Brian, played for the University of Alberta, while his older brother Stuart played for the Milwaukee School of Engineering. His youngest brother, Greg, has played Junior A ice hockey for the Hearst Lumberjacks, and his older sister Emilie played college hockey for Robert Morris University before being drafted into the Premier Hockey Federation.
Although Harley was born in the United States, his family raised him as a Canadian, and he holds dual citizenship of both countries. Growing up in Syracuse, Thomas and Stuart were often coached by their father on their respective youth teams. Originally a forward, Thomas was converted to defenceman by his father to fill a lineup gap, a move that ultimately helped shape his future in the sport.
Path to Hockey
Harley honed his game in Syracuse before moving into the Ontario Hockey League (OHL) pathway. He was selected by the Mississauga Steelheads in the first round, 14th overall, during the 2017 OHL Priority Draft. In his rookie OHL season of 2017–18, Harley adjusted to the new position and the league’s pace, recording one goal and 15 points in 62 games while gaining valuable postseason experience.
His development accelerated in 2018–19, when he tallied 11 goals and 58 points in 68 games for the Steelheads. At season’s end, his classroom performance was recognized with the Bobby Smith Trophy as the OHL Scholastic Player of the Year, and he was also named to the OHL Third All-Star Team. These accomplishments established him as a top prospect heading into the 2019 NHL Draft, where the Dallas Stars selected him 18th overall.
Thomas Harley Career
Early Career (2017–2019)
Harley’s first full season with the Mississauga Steelheads in 2017–18 was a learning year. He debuted on September 22, 2017, against the Ottawa 67’s, and earned his first career point with an assist on October 15, 2017. His first OHL goal came on December 8, 2017, against the Barrie Colts. By season’s end, Harley had one goal and 15 points in 62 games, along with two assists in six playoff contests.
In 2018–19, Harley emerged as one of the OHL’s top young defencemen. He recorded his first three-point game on September 23, 2018, and notched his first multi-goal game on December 31, 2018, scoring twice against the Windsor Spitfires. He finished the season with 11 goals and 58 points in 68 games, earned a selection to the OHL Third All-Star Team, and won the Bobby Smith Trophy as the OHL’s Scholastic Player of the Year.
Mississauga Steelheads and AHL Development (2019–2022)
After his draft year, Harley returned to the Steelheads for 2019–20, opening the season with points in each of his first 10 games. He recorded a career-high 18 goals and 57 points in 59 games before the season was cut short. On September 23, 2019, the Dallas Stars signed him to a three-year, entry-level contract. With the NHL paused in 2020, Harley joined the Stars’ taxi squad in the Edmonton bubble and made his NHL debut on August 5, 2020, logging 10:58 of ice time against the Colorado Avalanche. He became the youngest player on either roster as Dallas reached the 2020 Stanley Cup Finals.
Assigned to the Texas Stars of the American Hockey League (AHL) in January 2021, Harley made an immediate impact, scoring his first professional goal in overtime on February 8, 2021, against the Iowa Wild. He finished his rookie AHL campaign leading all league defencemen with eight goals and ranking second in assists with 17, totaling 25 points. Recalled to Dallas in November 2021, he notched his first NHL point on February 28, 2022, and his first NHL goal on April 28, 2022, against the Anaheim Ducks.
Breakthrough with the Dallas Stars (2022–2024)
Harley spent most of 2022–23 with the Texas Stars, focusing on his defensive game, and was selected for the 2023 AHL All-Star Game. He recorded 10 goals and 24 assists in the AHL before joining Dallas for the 2023 Stanley Cup playoffs, where he tallied one goal and eight assists in 19 games. The following off-season, with Colin Miller traded, a roster spot opened, and Harley earned a full-time NHL role for 2023–24.
Pairing primarily with Miro Heiskanen, Harley played a top-four role and averaged 21:01 in ice time across 79 games. He finished the regular season with 15 goals and 32 assists for 47 points, cementing his place in the Stars’ long-term plans.
Dallas Stars Era (2024–Present)
On September 17, 2024, Harley signed a two-year, $8 million contract extension with the Dallas Stars, carrying a $4 million annual cap hit. He continued to log top-pairing minutes and significant power-play responsibility for the Stars throughout the 2024–25 regular season.
On May 17, 2025, Harley delivered one of the defining moments of his career, scoring a power-play goal 1:33 into overtime to eliminate the Winnipeg Jets with a 2–1 win in Game 6 of the second round of the 2025 Stanley Cup playoffs. At 23 years and 271 days old, he became the third-youngest defenceman in NHL history to score a series-clinching overtime goal, trailing only Babe Pratt and Bobby Orr. He also became the second defenceman in Dallas Stars/Minnesota North Stars history to net a series-winning overtime goal, following John Klingberg.
Driving Style and Strengths
Harley is widely regarded as a smooth-skating, offensively gifted defenceman with strong transitional play and creativity in the offensive zone. His ability to quarterback a power play and quarterback pace from the back end has been central to his development, while his time in the AHL sharpened his defensive detail and penalty-killing reliability.
Notable Events and Milestones
Beyond his 2025 overtime winner, Harley reached the 2020 Stanley Cup Finals as the youngest player on either roster, won the Bobby Smith Trophy in 2019, and was selected to the 2023 AHL All-Star Game. In 2024–25, he also represented Canada at the 4 Nations Face-Off as an emergency addition and won the tournament.
Thomas Harley Career Wins
While individual win totals vary across leagues and seasons, Thomas Harley has piled up significant team and personal success, including an OHL Third All-Star Team selection, the Bobby Smith Trophy, the 2020 Stanley Cup Finals appearance, a 2023 AHL All-Star Game selection, and the 2024–25 4 Nations Face-Off championship with Canada. His most recent signature victory came in the 2025 playoffs against the Winnipeg Jets.
NHL Highlights
Harley has been a steady presence on the Dallas Stars’ blue line since breaking into the league in 2020. He appeared in the 2020 Stanley Cup Finals as a teenager and grew into a top-four role by 2023–24, recording 47 points. His 2025 overtime goal against the Jets stands as his most memorable NHL moment to date.
Other Wins and Performances
In the OHL, Harley helped the Mississauga Steelheads reach the playoffs in each of his three seasons and earned a top scholar-athlete honor. In the AHL, he led all rookie defencemen in scoring during 2020–21 and was later selected for the AHL All-Star Game. Internationally, he won the 2024–25 4 Nations Face-Off with Canada.
Thomas Harley Family
Family Background and Hockey Lineage
Hockey runs deep in the Harley family. His father, Brian, played at the University of Alberta, while his siblings have competed at the collegiate, junior, and professional levels. Older brother Stuart played for the Milwaukee School of Engineering, younger brother Greg has suited up for the Hearst Lumberjacks, and older sister Emilie played college hockey at Robert Morris University before joining the Premier Hockey Federation.
Personal Life
Thomas Harley maintains a relatively private personal life, focusing on his career with the Dallas Stars. He continues to honor his Canadian roots, having chosen to represent Canada at the international level despite being born in the United States.
2025 Season Performance
Thomas Harley entered the 2025 calendar year entrenched as a top-pairing defenceman for the Dallas Stars, averaging over 21 minutes of ice time per game and playing a key role on the team’s first power-play unit. His regular-season production reflected his expanded offensive role, and he remained a fixture alongside stars like Miro Heiskanen throughout the campaign.
The highlight of Harley’s 2025 came in the playoffs, when he delivered the overtime winner against the Winnipeg Jets to send Dallas through to the next round. That goal, combined with his steady two-way play, underscored his emergence as a core piece of the Stars’ blue line for years to come.
Looking ahead, Harley is signed through the 2025–26 season and remains a central figure in the Stars’ pursuit of a Stanley Cup. Continued growth on both ends of the ice and expanded leadership responsibilities are expected to define his next chapter in Dallas.