After winning four straight, the Raptors have now dropped two in a row, after losing on Sunday to the New York Knicks, 92-74.
The Knicks took control in the third quarter as New York went on a 27-5 run.
Chris Bosh and New York's Stephon Marbury led all scorers with 21 points each.
The Raptors face Orlando on Wednesday.
Down four runs, the Blue Jays tried to come back, but it wasn't enough as the Houston Astros beat Toronto, 4-3.
AJ Burnett pitched 4.1 innings giving up four earned runs and striking out two batters.
The Jays host the New York Yankees this afternoon in Dunedin.
Scoreboard
OHL
Belleville 6 Toronto-St. Michael's 5 (OT)
Brampton 8 Oshawa 5
Sudbury 6 at Ottawa 4
Saginaw 7 Windsor 2