The injury took place just five minutes into the game. Near the Senators bench, White attempted to land a hit on Maple Leafs forward Dave Kampf. Both players fell to the ice after the collision, with White appearing to land awkwardly on his arm. White was slow to get up and immediately left for the Senators dressing room.
After the game, Senators coach D.J. Smith said White would undergo an MRI on Tuesday but is exepected be out for a while.
Originally drafted by the Senators 21st overall in the 2015 NHL Draft, White skated in 45 games for Ottawa last season, scoring 10 goals and assisting on eight others.