The Rams (4-10) trailed 33-28 at the break and by seven a minute into the second half. They then went on an 18-5 run, with Gaston scoring eight points, to take the lead for good.
The Hawks (5-8) got within a point on two occasions, the last time at 49-48 with 10:21 to go, but Smith knocked down two straight 3-pointers to spark an 11-2 run and Monmouth never threatened again.
Fordham, coming off a 73-48 loss to Georgia Tech on Saturday, posted its highest point total of the season, as Mandell Thomas added 12 points and leading scorer Branden Frazier (16.8 points per game) chipped in 11. Ryan Canty had 14 rebounds.
Jesse Steele led Monmouth with 13 points.
The Big East has joined the ACC, Atlantic 10 and Colonial Athletic Association in forming a men's basketball officiating alliance.
Nebraska guard Andrew White, who averaged 16.6 points and 5.9 rebounds per game last season, will transfer from the program and is eligible immediately. What else is on Dickie V's mind this week?
The Cavaliers bring in a top-10 class of four incoming freshmen, so the Class of 2017 will be a small one. Coach Tony Bennett is aiming high.