If the Bills end up winning Super Bowl LVII, get a table ready for Ryan Fitzpatrick in Buffalo ... 'cause the ex-QB tells TMZ Sports he'll jump through it to celebrate the title!
Fitz -- who played four seasons for the Bills from 2009 through 2012 -- made the promise this week ... saying he'd personally fly to Buffalo for the occasion if his old team got the job done.
"There's no doubt," he said. "I will be there in Buffalo to do that if that happens, yes."
Seems there's a good possibility it all goes down .