Career
Before playing in the NHL, Marner played three seasons with the London Knights of the Ontario Hockey League (OHL). He had a very successful time with the Knights. With the Knights, he won the CHL Player of the Year, Jim Mahon Memorial Trophy, Red Tilson Trophy, and Wayne Gretzky 99 Award. He was also named to the Second All-Rookie Team, back-to-back First All-Star Teams and was named a back-to-back OHL All-Star. He helped the Knights during the playoffs. They defeated the Owen Sound Attack, Kitchener Rangers, and Erie Otters before defeating and sweeping the Niagara IceDogs four games to zero to win the J. Ross Robertson Cup. This earned them a spot in the Memorial Cup tournament. The Knights defeated the Rouyn-Noranda Huskies 3-2 overtime win in the final game to win the Memorial Cup.
He was drafted 2nd overall by the Toronto Maple Leafs in the 2015 NHL entry draft. On July 28, 2015, Marner signed a three-year entry-level contract to join the Leafs.
On October 12, 2016, Marner made his NHL debut in a 5–4 overtime loss against the Ottawa Senators. Three days later on October 15, he scored his first NHL goal against Anton Khudobin in a 4–1 win against the Boston Bruins. On September 13, 2019, Marner signed a six-year, $65.358 million contract to stay with the Leafs. On February 26, 2022, he recorded his first NHL hat-trick and a fourth goal in a 10–7 win against the Detroit Red Wings.
On June 30, 2025, Marner was involved in a sign-and-trade. Marner signed an eight-year, $96 million contract with the Leafs and was traded to the Vegas Golden Knights in exchange for Nicolas Roy.
Canada