Toronto FC midfielder Ralph Priso has undergone surgery for a season-ending ankle injury.
The MLS club said the operation took place Thursday at Toronto Western Hospital.
Priso was injured Aug. 14 in the second half of Toronto's 2-1 home loss to the New England Revolution. He limped off after making a goal-line clearance in the 67th minute and had to be helped back to the locker room.
The saving play was for naught with the offside flag raised.
The 19-year-old Priso had just 15 MLS appearances under his belt, including 11 this season, but has turned heads with his play.
He joins striker Ayo Akinola (knee) in TFC players done for the season after surgery. Star forward Jozy Altidore underwent surgery on his right foot Aug. 19, with a six-week recovery time predicted.
Toronto (3-13-6) plays next at FC Cincinnati (3-9-8) on Sept. 11 in a matchup of teams with the two worst records in the league.
In other TFC news Friday, the club announced it had loaned Canadian winger Jacob Shaffelburg to Toronto FC II for the remainder of the 2021 season. The MLS team can recall at any time during the regular season.
The 21-year-old from Port Williams, N.S., has made 10 appearances for TFC this season, including four starts.
TFC II (6-6-7) was sixth in USL League One prior to its game Friday against Greenville Triumph SC.
This report by The Canadian Press was first published Sept. 3, 2021
The Canadian Press