When was the last time the Maple Leafs had such depth?

With Joffrey Lupul injured — he didn’t skate at all on Tuesday although the team says he’s coming along just fine — the Leafs have figured out other ways to score and to win.

The Leafs are showing remarkable depth. Sure, the first line had a big night on Monday in beating the Rangers in the first of this home-and-home series.

But down the lineup, other guys are contributing.

There was Ryan O’Byrne, the stay-at-home defenceman who scored in his Leaf debut. There’s Joe Colborne, who has maybe been wearing that “prospect” label a bit too long, centering the fourth line. And ready to step in when needed: Ryan Hamilton, the Marlies’ captain and go-to scorer who’s proven to be a reliable defensive player at the NHL level.

These are all relatively recent additions to a team heading toward its first playoff spot since 2004.

“I remember I got called up for a game last year around this time and the Leafs were out of the playoffs,” said Colborne. “It was a completely different mood last year compared to this. It stems right from the top. The coaching staff, right on down, have their eyes set firmly on making the playoffs. The focus that the coaching staff keeps us on is the next game, the next shift, the next period.

“That’s the reason for the success that’s happening. I’m thrilled to be a part of it, and I’m trying to soak it all in as much as I can.”

Colborne might be the most intriguing addition of the three, certainly the one with the most upside. He has the size —six-foot-five and 213 pounds — hockey minds associate with No. 1 centre. (Some call him Jumbo Joe, a moniker taken by San Jose star Joe Thornton.)

Hampered by injuries since coming from Boston three seasons ago in the Tomas Kaberle trade, Colborne has both tantalized and underachieved. His two games so far have been underwhelming.

“Joe is treading water a little bit here,” said Leafs coach Randy Carlyle. “I talked to him about our expectations, the tenacity, the drive, all those things are things that have to go up when he’s getting an opportunity. We’re trying to say: ‘Hey you’re’ rewarded for the work you’ve put in and the development that you’ve shown with the Marlies.’