Dal Colle was selected 7th overall in the 2012 OHL Priority Selection by the Oshawa Generals. He was rated as a top prospect prior to the 2014 NHL Entry Draft. Dal Colle was recognized for his outstanding performance during the 2012–13 season when he was named to the OHL First All-Rookie Team. He also won a gold medal with Team Canada at the 2013 Ivan Hlinka Memorial Tournament. On September 28, 2014, the Islanders announced that they had signed Dal Colle to a three-year entry level contract. On January 1, 2016, Oshawa traded Dal Colle to the Kingston Frontenacs in exchange for Robbie Burt and four draft picks. At the conclusion of the OHL season, Dal Colle joined the Bridgeport Sound Tigers, the Islanders American Hockey League affiliate. Dal Colle began the 2017–18 season with the Sound Tigers after being cut from the Islanders training camp. Dal Colle was called up from the Sound Tigers on January 11 and made his NHL debut with the Islanders on January 13, 2018, against the New York Rangers. Dal Colle attended the Islanders training camp prior to the 2018–19 season but was reassigned to the Sound Tigers. On January 3, 2019, Dal Colle and teammate Sebastian Aho were selected to represent the Sound Tigers at the AHL All-Star Classic. On January 17, 2019, Dal Colle scored his first NHL goal in a 4–1 Islanders' victory over the New Jersey Devils. He was reassigned to the Sound Tigers shortly thereafter only to be recalled again on an emergency basis on March 5, 2019. In his first game back, Dal Colle recorded an assist off Devon Toews' goal to help the Islanders win 5–4 over the Ottawa Senators. On March 8, Dal Colle's emergency recall status was changed to a regular recall.
Personal life
Dal Colle was raised in Vaughan, Ontario as the youngest of three children to Gus and Wendy Dal Colle, having an older brother, Jonluca, who is autistic, and a sister, Daniela, who played hockey at Niagara University. Dal Colle is of Italian descent from his paternal side, with his grandparents, Bruno and Gilda, emigrating from Verona, while his mother is of Irish descent.
