Toronto Blue Jays general manager Ross Atkins delivered some lousy news Thursday, telling reporters that outfielder Dalton Pompey - vying for a spot on the active roster this spring - has been shut down due to a concussion sustained last week at the World Baseball Classic, according to Arash Madani of Sportsnet.

Pompey, who missed about three weeks in 2016 after suffering a concussion while playing for Triple-A Buffalo, was put through Major League Baseball's concussion protocol after exiting Team Canada's first-round loss to Colombia on Saturday with mild dizziness - the result of a wonky headfirst slide into second base. He'll have to clear the protocol before he can return.

On Monday, a day after being omitted from the lineup in Canada's final game of the tournament, the 24-year-old Mississauga, Ontario, native fired off this cryptic tweet:

Why do we fall?



So we can learn to pick ourselves up... — Dalton Pompey (@DaltonPompey) March 13, 2017

Pompey, who arrived at spring training eyeing a left-field platoon job with the Blue Jays in 2017, impressed in camp before leaving for the WBC, managing a .919 OPS with one home run and a pair of walks in four Grapefruit League games.