With Adam Sandler stooge-helmer Peter Segal (Tommy Boy, Anger Management, 50 First Dates, The Longest Yard) setting the tone and a flip, smart-ass script by Doug Ellin, Tim Kelleher and Rodney Rothman, Grudge Match (Warner Bros., 12.25) might be a half-tolerable comedy. Maybe. But you never know with these lowball enterprises which (let’s be honest) are aimed at Joe and Jane Popcorn from Paramus, New Jersey. You can bet that Grudge Match will be drenched in amyhdrous butter fat and covered with handfuls of salt. Alan Arkin as a trainer will be funny — you can tell that right off the top. Whose ex-wife or disapproving girlfriend will Kim Basinger play?