Celtics' Al Horford on vaccine requirement for potential series in Toronto: 'I'll be ready to play wherever' | CBS Sports Headlines Celtics' Al Horford on vaccine requirement for potential series in Toronto: 'I'll be ready to play wherever' Jaylen Brown, who also missed the trip to Toronto for Monday’s game, … Continue reading Celtics' Al Horford on vaccine requirement for potential series in Toronto: 'I'll be ready to play wherever'