St-Amant split time this past year between the Eagles and the Avalanche's American Hockey League affiliate in San Antonio. He dressed in 28 outings with the Rampage.
After dropping Game 1 in double overtime on Friday night, the Stingrays came out with a strong first period. Though Colorado had a 12-8 shot advantage after 20 minutes, South Carolina had more attempts, 24-14, and led 1-0.
Steven McParland opened the scoring for the Stingrays four minutes into the stanza as he picked up his own rebound off a deflection and potted the puck short side past Eagles goaltender Lukas Hafner.
Colorado responded with a better second frame and recorded a pair goals in a matter of 1:03 early in the stanza.
"This is our rink, and we know how to play here. We play hard, we don't get outworked here, and that's what we did," Avs prospect Mason Geertsen said of the team's mindset after being down 1-0.
Boikov and fellow prospect Julien Nantel had the assists on Matt Garbowsky's power-play tally that knotted the game 1-1 at 3:34. Boikov fired the puck from the high slot, and Garbowsky deflected it past South Carolina goalie Parker Milner while positioning himself in front of the crease.
"After the first period, we talked to the guys that we had to be more intense and put pucks on the net because it worked out last game," Boikov said. "We tried to do what we can, and it worked."
Sean Zimmerman then scored his second of the postseason at 4:27 of the middle frame to put the Eagles ahead for the first time in the contest.