But nine points was as close as the Crimson would get.
Holy Cross made mincemeat of the Crimson defense. They stole, ran and alley-ooped at will. Rullman and Walker each scored 13 points in the first half, which ended with Holy Cross commanding a 47-33 lead.
The loss drops the Crimson to 0-4 on the season.
"It's not a good feeling, but we've played four very good teams," said Captain Ron Mitchell, who, like his teammates, has struggled in the early going.
"We're in a transition period in the backcourt and we're trying to find our scorers," Sullivan said. "Our guards are a little inexperienced. We've got the pieces but they haven't meshed yet."
Before getting any easier, the schedule takes one last swing at the Crimson, with Big East doormat Boston College coming to Briggs Cage on Saturday at 2 pm.