Hollowell, 20, currently leads all Ontario Hockey League defencemen in goals (23) and points (72) with the Sault Ste. Marie Greyhounds. In 254 regular season games over five OHL seasons with the Greyhounds, the Niagara Falls, Ontario native has collected 178 points (41 goals, 137 assists) while recording 23 points (three goals, 20 assists) in 47 playoff games.
Hollowell was selected by the Maple Leafs in the fourth round (118th overall) of the 2018 NHL Draft.