After Ehire Adrianza laid down a sacrifice to move the runners up, pinch-hitter Buster Posey was intentionally walked to load the bases.
That brought up Scutaro (2-for-4), who lined a single to right, chasing home Crawford with the score-tying run and sending Pagan to third.
Belt then followed with the key blow, slapping an RBI hit the opposite way to left field.
Guillermo Moscoso (2-2) tossed two shutout innings to notch the decision and Santiago Casilla secured the victory with his second save.
Nelson Arenado supplied two RBI for the Rockies.
Kris and Bruce Jenner divorcing
UPI horse racing roundup