The Blues came away with five points on their four-game trip, but missed out on a chance for an exceptional excursion by dropping the final game, 5-2, to Boston at TD Garden on Thursday.
The Blues started the trip 2-0-1 and had a 2-1 lead in the second period, but gave up three goals in a row, plus an empty-net goal in the final minute, to the Bruins and saw a run of five road games without a regulation loss end.
The turnaround started with a power-play tip-in by ex-Blue David Backes that tied the game with 4 minutes to go in the second period.
It was a sloppy game for the Blues, who turned the puck over a season-high 25 times.
In a play that pretty much summed up how things are going for forward Jaden Schwartz, he had a partial breakaway with a chance to tie the game in the third period and instead tried a drop pass, which was broken up by Boston.
Going into the third period tied at 2, Boston took the lead with 14:33 to go on a goal by Chris Wagner on a breakaway. With 6:48 to go in the period, Brad Marchand knocked in a rebound of a Charlie McAvoy shot to make it 4-2.
Ryan O'Reilly and Carl Gunnarsson scored for the Blues, who gave up a goal to Boston only to have O'Reilly respond with a goal less than a minute later.
David Perron had an assist on O'Reilly's goal, extending his point streak to 13 games. That matches Alexander Steen's 13-game point streak in 2013-14, the most recent of three Blues to have a 13-game run. Next up is the 15-game streaks of Pierre Turgeon and Adam Oates. Jordan Kyrou also had an assist on the O'Reilly goal.
O'Reilly's goal came 52 seconds after Boston had taken a 1-0 lead on a goal by Torey Krug that came right after a second ineffective power play for the Blues.
With 6:24 to go in the period, Gunnarsson put the Blues ahead 2-1 with his first goal of the season after some extended pressure in the Boston zone. Eventually, Schwartz got the puck to Gunnarsson, who crept in and fired it past Tuukka Rask.
The Blues couldn't keep the lead, though, as a penalty on Robert Bortuzzo gave Boston a power play and, with four seconds to go, Backes did what he did a lot of in St. Louis, tipping in a shot, in this case from Zdeno Chara. Backes knocked in the puck as he was being knocked down by Jay Bouwmeester in front of the net.
The Blues had another power play late in the period, which ended when the Blues were called for their 11th too-many-men penalty of the season, though their first in almost a month.
After facing 13 shots in the first period, Jake Allen faced only eight in the second period and five in the third, but the Blues defense put him in tough spots.
The Blues had nine shots on goal, three from Alex Pietrangelo, but no really great scoring chances. The Blues had 11 turnovers in the first period, as many as they had in the whole game on Tuesday against the Islanders. They had only three in the second period.
Pat Maroon squared off in a fight with Chara late in the first period. Each got five minutes.
The Blues had a power play, but didn't get a shot on goal during it.
