Knicks celebrity superfan Tracy Morgan vomited at his courtside seat during Monday ... while Morgan was taken off in a wheelchair and the arena staff cleaned up the area during the third quarter.

Comedian Tracy Morgan updated fans on a concerning medical incident that occurred while sitting courtside at a Knicks ... was pictured vomiting on the arena floor, he was taken out of Madison ...

The Raptors and the Leafs play at Scotiabank Arena, but not all the action is ... he could be seen leaving his near courtside seats in a wheelchair. The rapper could not finish watching the ...