Hatter matched his season high in scoring, hitting half his eight field goal attempts and sinking 12 of 13 from the line. Miller also connected on 9 of 18 from the field and grabbed a career-high 15 rebounds, including 13 off the defensive glass.
Cornell (6-5) had more defensive rebounds - 33 - than Siena's total of 31. The aggressive rebounding was a factor in Siena's chilly 16 of 52 shooting.
Siena led much of the first half, trailing 27-26 at the break. Miller opened the second with a 3-pointer as all four of Big Red's made 3's came after halftime to break away for 48 points.