DeMelo was selected by the San Jose Sharks in the sixth round (No. 179) in the 2011 NHL Draft after he had 27 points (three goals, 24 assists) in 67 games for St. Michael's in the Ontario Hockey League.
DeMelo signed an entry-level contract with the Sharks on April 20, 2012 after he finished seventh among OHL defenseman in points with 47 (seven goals, 40 assists). In 2012-13, he had 50 points (15 goals, 35 assists) in 64 games for Mississauga.
DeMelo was selected by the San Jose Sharks in the sixth round (No. 179) in the 2011 NHL Draft after he had 27 points (three goals, 24 assists) in 67 games for St. Michael's in the Ontario Hockey League.
DeMelo signed an entry-level contract with the Sharks on April 20, 2012 after he finished seventh among OHL defenseman in points with 47 (seven goals, 40 assists). In 2012-13, he had 50 points (15 goals, 35 assists) in 64 games for Mississauga.
He spent the next three seasons with Worcester in the American Hockey League, where he had 50 points (seven goals, 43 assists) in 143 games.
DeMelo made his NHL debut in a 6-3 loss to the New York Islanders on Oct. 17, 2015 and got his first NHL point, an assist, in a 4-3 overtime win against the Dallas Stars on Jan. 16, 2016. He scored his first NHL goal on the power play five games later in a 6-1 win against the Colorado Avalanche on Jan. 26 and finished the season with four points (two goals, two assists) in 45 games.
In 2016-17, DeMelo had eight points (one goal, seven assists) in 25 games. In 2017-18, he set career highs in assists (20) and games (63) and had one assist in 10 games in the Stanley Cup Playoffs.
