[Not2B]

5 'bots...

Could it be a 6 robot game but only 5 footballs?
or
Only 5 spots for robots at the end-game. They will have to tangle (fight) for those 5 spots, as someone is not going to get one.

It says 5 'bot tangling, but that doesn't mean the 6th bot isn't doing something else.

(But I still think it's 2v3, with some wild way of making the teams or a wild way of scoring the match)