Randy Carlyle still has some work to do.

The new coach put his Toronto Maple Leafs through two lengthy practices after taking over for Ron Wilson, but the team met a familiar fate against the Boston Bruins — dropping a 5-4 decision on Tuesday night.

Jordan Caron and Tyler Seguin each had two-goal performances as the Bruins beat Toronto for the fifth time this season. They’ve outscored their Northeast Division rival 28-10 in the process.

Chris Kelly also had a goal for Boston (39-23-3), which halted a two-game losing slide. Tim Thomas stopped 25 shots and picked up the victory.

Carl Gunnarsson, John-Michael Liles, Phil Kessel and Mikhail Grabovski replied for the Maple Leafs (30-29-7).

A major point of emphasis from Carlyle and new assistant Dave Farrish has been trying to get Toronto to play a more conservative defensive game. However, there wasn’t any sign of that in an entertaining, wide-open affair.

The Leafs played more than half the game with a short bench after losing forwards Joffrey Lupul and Colby Armstrong early in the second period. Lupul appeared to suffer a wrist injury after taking a check from David Krejci while Armstrong was bloodied in a fight by Dennis Seidenberg.

The middle frame offered a glimpse of the tougher brand of hockey the Leafs are expected to play under Carlyle with three fights. It also cost Toronto the game.

After Liles put the Leafs ahead 2-1 with a power-play goal at 57 seconds, Boston quickly struck twice. Seguin tipped a Zdeno Chara home at 2:02 before Kelly knocked a rebound past Jonas Gustavsson, who was bumped out of position by a hard-charging Caron, at 2:43.

A 5-on-3 power play allowed the Leafs to tie it, with Kessel getting his 33rd of the season at 9:52, but Caron and Seguin each replied before the intermission.

Caron tapped home a beautiful pass from Chara at 13:34 and Seguin converted a beautiful one-timer at 14:09.

That put Boston ahead 5-3 heading to the final period. Grabovski narrowed the gap after getting sent in alone and beating Thomas at 13:13, but the Leafs couldn’t find the equalizer despite getting a two-minute power play late.

The night had actually got off to a good start for the team. Gunnarsson opened the scoring by beating Thomas high with shot at 3:01. However, Caron tied it before the first intermission and the team fell into some of its old habits.

As a result, the Leafs dropped their sixth straight game at Air Canada Centre. Just one more thing Carlyle needs to work on.