The Buffaloes lost both games while Cavanaugh was out, and now they need to win at least one of their final two games to reach the playoffs.
Cavanaugh was told by district officials not to say anything about the suspension this week.
"It's great to be back," Cavanaugh said. "We're moving forward. We've got a big game against Bismarck."
G-RF/C will host Bismarck-Henning Friday night at 7:00 p.m.
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