It wasn't all good news in the night for the Avalanche, as Boikov left the game in the first stanza with a shoulder injury. Moments after scoring his goal, the defenseman was hit hard into the corner boards by Dallas' Remi Elie and went to the locker room in pain.
Duncan Siemens took exception to the hit and fought Elie in defense of his teammate soon after. Each player received matching, five-minute major penalties.
Boikov did not return to the contest.
"I haven't talked to him yet, but I know it's an upper-body injury and I'm getting the impression that it isn't day-to-day," Bednar said in his postgame news conference
Like Tuesday's contests, there were plenty of penalties, including five slashing calls--an area in which the on-ice officials are trying to limit. In total, there were 21 total infractions handed out.
Colorado went 2-for-9 on the man advantage while Dallas went 1-for-6 with the extra skater.
"The other night, we were not very good on it, and tonight they found their rhythm," Bednar said of his club's special teams performance. "We had a lot of power plays, and we had some time to work on it. We've worked on it two days in a row now, and we'll continue to touch it every day in training camp. You can see the skill there."
Andrighetto and Kerfoot scored the Avs' power-play goals, with each player redirecting a shot past Stars netminder Kari Lehtonen while positioning themselves in front of the crease.
Lehtonen made 16 saves while playing the first two periods. Landon Bow guarded Dallas' pipes in the third period and made seven stops.
Roope Hintz netted the Stars' lone goal of the night, burying a rebound on a man advantage with 8:54 left to play to end Varlamov's shutout.
The Avalanche now gets set to play three preseason games in three days, beginning on Saturday at the Minnesota Wild. Colorado will then host the Wild on Sunday before playing in Dallas on Monday night.