Oliver Queen & Sara Lance (CW-verse) vs Spider-Man (Raimi-verse)

This is Oliver and Sara from Arrow and Legends of Tomorrow, respectively going up against Peter Parker/Spider-Man as portrayed by Tobey Maguire in the Sam Raimi trilogy. These are the last-seen (latest) incarnations of all three characters.

Vs.

Peter, in his Spidey costume, was battling against some random magical villain who managed to toss him inside a black hole, which then landed Spidey in Arrow's dimension, smack in the middle of the Arrowcave. Oliver and Sara, both already clad in their respective Green Arrow and White Canary gear, immediately attack Spider-Man, who they deem as an intruder. Spider-Man, in defense, fights back, leading to an all-out battle in the lair between the characters.

Morals on for all characters

Takes place in Oliver's lair (as mentioned above)

Fight ends with K.O. or any type of incapitation.

Oliver and Sara access to all their usual weapons they keep in the lair.