The Blues knew it was coming at some point, but they weren't planning on their first regulation loss on home ice this season coming the way it did.

Dallas rallied for two goals in the third period Saturday night and waltzed out of Scottrade Center, where the Blues had been nearly perfect this season, with a 2-1 victory.

The Blues, who lost in a shootout to Nashville at Scottrade Center earlier this season, were the last team in the NHL to lose on home ice in regulation, falling to 8-1-1. It also ended a streak of 15 straight games without a regulation loss at home, dating to last season.

"It would have been nice if we won all 82, but it's a tough one to lose whether we lost all eight at home or it was our first one," Blues defenseman Alex Pietrangelo said. "Especially after going through the same thing last night."

Yes, Saturday was a repeat of Friday's 3-2 loss to Dallas, in which the Blues had a 2-1 lead at the second intermission and gave up two goals in the third period, allowing the Stars to rally for the win.

One night later, the Blues carried a 1-0 lead into the third frame, and Dallas picked up two more goals in the final 20 minutes to come from behind again. It marked the only two times this season the Blues have taken a lead into the third period and lost in regulation.

"I don't believe it has anything to do with third periods against Dallas," Blues coach Davis Payne said. "We're talking conspiracy theories if that's what we want to point to. I feel that if we play good hockey, and we play in the right spots with leads, or from behind, we're going to have success. Dallas ... third periods ... it's a non-factor to me."

Jamie Benn and Loui Eriksson spoiled the Blues' 10th consecutive sellout at Scottrade Center this season with goals in the third. Benn, who scored and assisted on the Stars' third-period goals Friday, beat goaltender Jaroslav Halak just 1:05 into the third period Saturday.

A few minutes later, Dallas went on the power play when Alex Steen was whistled for elbowing. The Stars were 1-for-31 on the power play on the road this season coming into Saturday's game. They misfired on their first two attempts Saturday.

But with 14:30 left in regulation, Eriksson put a wrist shot past Halak for a go-ahead, power-play goal. Vladimir Sobotka was reaching with his stick to poke the puck and Eric Brewer stood in front looking for the block.

Halak, who finished with 21 saves, said he should have been able to make the save.

"It was a broken play, a rebound, and he shot it high and it went over me," Halak said. "It was a good shot, but at the same time, I have to make the big saves for our team and I didn't."

They Blues opened a 1-0 lead on B.J. Crombeen's goal with 1 minute, 11 seconds remaining in the second period.

Crombeen, playing with Patrik Berglund, scored his first goal in nine games on an aggressive play. Crombeen fed Berglund the puck and then charged to the net. When a slap shot by Berglund tricked past Stars goalie Kari Lehtonen, Crombeen tapped in the loose puck.

"The bigger picture is we lost the last two games, so that stings more than any personal success," Crombeen said. "They're an opportunistic team and for whatever reason we took our foot off the gas a little bit in both of the last two nights ... for just five or 10 minutes.

"They found a way to put some pucks in the net and it cost two points in both games."

The Blues pulled Halak in the late going and had a couple of chances for the equalizer, but couldn't convert. The Blues outshot the Stars 36-23.