Seguin/By S. Bradley

The Washington Capitals let the Bruins slip out of their fingers, and Tyler Seguin escaped his cage as well.

Now there’s no telling if the Bruins will be corralled again.

Seguin scored the game-winner 3:17 into overtime as the Caps failed to close out the Eastern Conference Quarterfinals in Game 6 today, and now the Bruins will host Game 7 Wednesday night at TD Garden.

The goal was Seguin’s second point of the game, as he assisted on Andrew Ference’s third-period goal with a shot on the rush off goaltender Braden Holtby’s mask. To beat Holtby on the clincher, Seguin darted toward the right side of the slot and waited for the rookie netminder to leave his feet before firing the puck into the open cage.

Seguin’s points were his first of the series. He skated on a line with Milan Lucic and David Krejci, who both enjoyed two-point days as well after recording just one assist apiece in the first five games. Krejci scored a power-play goal on a give-and-go with Lucic.

Krejci led the Bruins with five shots on net and also won 12 of 24 faceoffs. Prior to Seguin’s goal, Krejci knocked down Nicklas Backstrom’s pass at the red line and bumped it ahead to Lucic to start the winning play.

▪Krejci had to pick up a lot of slack on key faceoffs, as did Rich Peverley, because Patrice Bergeron was unable to take draws due to an upper-body injury from Game 6. Peverley won 13 of 24 draws and also notched a goal and an assist. He now has 3-2-5 totals in the last four games of this series and he has been by far Boston’s best forward in this series. Peverley skated 22:36 of ice time. He’s come a long way from the guy who looked rusty at the outset of the series as he continued to work his way back from a knee injury.

▪It should be noted as well that Bergeron won the only faceoff he took late in regulation with the score tied after an icing call.

▪While Bergeron was able to play, Joe Corvo did not. Mike Mottau filled in and skated just 9:21. He was a minus-1 because he was on the ice when Mike Green’s shot banked off Greg Zanon’s leg and beat Tim Thomas.

▪Krejci’s power-play goal late in the first period was crucial. But otherwise Boston’s man-advantage was a detriment. The Bruins failed to score or build momentum during a double minor early in the second, and Washington used that kill to turn the tide of the game. The Caps outshot Boston, 15-5, in the second. The Bruins also failed on a 4-on-3 that went from late in the second period to the early portion of the third.

The Bruins were 1-for-5 on the power and are now 2-for-20 in the series.

▪One has to assume Claude Julien will give Brad Marchand a long talking to about the speedy forward’s embellishment on a Jason Chimera non-call for interference before the Caps forward scored the tying goal with 42 seconds left in the second. Chimera and Marchand might’ve made some contact at the Washington blue line on the breakout, but not nearly enough to make Marchand pirouette like he did. Marchand was cut above his lip, but in the playoffs you’ve got to get up and get back in the play.

It didn’t help that Dennis Seidenberg’s broken skate prevented him from keeping Chimera covered on the rush up ice.

▪The Capitals only blocked 12 shots, a far cry from the more than 20 they’ve been getting on most nights.

▪I’d be remiss if I didn’t point out that just 14 seconds before the winning goal, former Bruins defenseman Dennis Wideman iced the puck from behind his own goal. He was also on the ice for Seguin’s score.

Zdeno Chara’s icing helped set up Alexander Ovechkin’s game-tying goal in the third, as well.