ST. LOUIS — Marian Hossa scored on a break-in at 19 seconds of overtime after a defensive mistake, and Ilya Kovalchuk scored his NHL-leading 29th goal in the Atlanta Thrashers’ 3-2 victory over the St. Louis Blues on Sunday night.

Hossa swept in alone on goalie Manny Legace after Jay McKee fumbled the puck in the air and then lost control after Eric Perrin flipped it into the St. Louis zone.

The Thrashers have won four in a row, beating Montreal by the same score in a shootout Saturday, after losing their previous four games, and won in St. Louis for the first time in franchise history.

Kovalchuk has 25 goals and 16 assists in the last 28 games for the Thrashers, who climbed above .500 at 18-17-1. Mark Recchi tied it in the third period with his fourth goal in seven games since being claimed off re-entry waivers on Dec. 8.

Keith Tkachuk had a goal and an assist for the Blues, giving him six points in three games.

Tkachuk has a goal in each of the last three games, giving him a career total of 482, after being limited to eight assists in the previous 15 games.

Blues defenseman Barret Jackman added his first goal of the season and only the 12th of his career.

The Thrashers had been 0-3 in St. Louis, getting outscored 11-1, since entering the NHL in 1999-2000.

The 39-year-old Recchi, who landed with Atlanta after the Penguins had sent him to Wilkes-Barre/Scranton of the AHL, tied it at 10:42 of the third, scoring off a rebound on a power play.

The Thrashers dominated in the third period, outshooting the Blues 9-3.

Tkachuk scored his ninth goal on a power play at 5:48 of the third, deflecting a pass from the point by Erik Johnson to put the Blues ahead 2-1.

Atlanta had a 9-0 advantage in shots before Andy McDonald got off a quick shot from the slot at 9:35 of a scoreless first period.

Jackman capitalized on a big rebound to put the Blues ahead at 7:08 of the second. Kari Lehtonen couldn’t corral the puck on Tkachuk’s shot from the left side and Jackman swept in from the point and had a big opening.

Kovalchuk tied it on a power play with a slap shot from the left point.

Jamal Mayers was in pain after blocking Kovalchuk’s drive earlier in the possession and stuck out his stick on the second shot at 16:22.

The Thrashers just missed another goal earlier in the period when replays showed Todd White’s shot from in front deflected off the crossbar at 3:47.