The Engineers could only generate offense on the power play through the first two periods, with almost half its shots coming with the man advantage.
The Crimson held Rensselaer to just five shots in the second period.
RPI seemed to have one final golden chance to tie the score when Capouch and Murley took coincidental unsportsmanlike conduct penalties. The extra open ice invigorated its flashy talent, but two more saves by Jonas made sure the game was iced.
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"After the quick goal we put them on their heels a bit," Allman said. "We played physically and really didn't allow their guys to cycle. It was an exciting game and a great win."