**Defenseman**

*Notes accurate as of Sept. 1, 2025*

**Pronunciation:** TIH-mihnz, KAW-nuhr

**Contract Status:** Signed through 2026-27 ($2.2 million AAV)

**CAREER TRANSACTIONS:** Acquired by Buffalo from Pittsburgh with Isaac Belliveau in exchange for Connor Clifton and a second-round pick in the 2025 NHL Draft (Peyton Kettles) on June 28, 2025; Acquired by Pittsburgh from Toronto with Connor Dewar in exchange for a fifth-round pick in the 2025 NHL Draft (Will Belle) on March 7, 2025; Acquired by Toronto from Arizona in exchange for Curtis Douglas on Nov. 23, 2022; Acquired by Arizona from Colorado with a first-round pick in the 2022 NHL Draft (Reid Schaefer) and a third-round pick in the 2024 NHL Draft (Tomas Lavoie) in exchange for Darcy Kuemper on July 28, 2021; Selected by Colorado in the second round (32nd overall) of the 2017 NHL Draft.

**CAREER HIGHLIGHTS:**

* Made his AHL debut on Oct. 11, 2019 at Ontario as a member of the Colorado Eagles. * Registered his first AHL goal on Nov. 11, 2019 at Milwaukee. * Ranked second among all Eagles defensemen in assists (24) and finished tied for second in points (27) in 2019-20. * Made his NHL debut with Colorado on Oct. 3, 2019. * Recorded his first NHL point, an assist, on April 14, 2021 at St. Louis as a member of the Avalanche. * Notched the first goal of his NHL career on Jan. 8, 2023 with Toronto at Colorado. * Skated in his 100th NHL game on Oct. 31, 2024 vs. Seattle as a member of the Maple Leafs. * Notched a three-game point streak from March 13 to 18, 2025 (1+3) with Pittsburgh, the longest such streak of his career.

**AMATEUR HIGHLIGHTS:**

* Posted 13 points (4+9) in 60 OHL games as a rookie with the Soo Greyhounds in 2015-16 and added one assist in 12 playoff games. * Recorded 61 points (7+54) in 67 games with the Greyhounds in 2016-17 and ranked third among OHL defensemen in assists. Appeared in the 2017 CHL Top Prospects Game. * Served as an alternate captain for the Greyhounds in 2017-18, producing 41 points (8+33) in 36 games and adding 18 points (5+13) in 23 playoff games. Named to the OHL Second All-Star Team.

**INTERNATIONAL HIGHLIGHTS:**

* Represented Canada at the 2018 IIHF World Junior Championship, recording 5 points (1+4) in 7 games. Led the tournament with a plus-15 rating, was named one of Canada’s Top 3 Players, and helped capture a gold medal.

**NHL FIRSTS**

**Game:** 1/13/21 vs STL

**Goal:** 1/8/23 at PHI

**Assist:** 4/14/21 at STL

**AWARDS & HONORS**

**Professional**

N/A

**International**

2018 IIHF World Junior Championship Gold Medal

**Amateur**

2016–17 CHL Top Prospects Game

2017–18 OHL Second All-Star Team