The pair play long-time adversaries who agree to a tiebreaker, 30 years after an unsettled rivalry in the ring.
While the ol' timers plot has been heavily played out recently — "Red 2,""Expendables 2," etc. — the trailer for "Grudge Match" surprises with highly entertaining supporting roles by Alan Arkin and Kevin Hart.
Plus, a brief clip of Stallone in a meat locker hints at fun Easter eggs.
"Grudge Match" hits theaters December 25.
Watch the trailer: