It wasn't that hard to imagine the Dallas Mavericks being one of the NBA's best offensive teams after adding Chandler Parsons and a pair of other significant pieces in the offseason.

With a rotation that's largely unchanged, the Toronto Raptors' rise was a little harder to see coming.

The league's two highest-scoring teams meet north of the border Friday night with the Raptors seeking their first seven-game winning streak since Vince Carter's heyday.

You can listen to all the action on TSN Radio 1050 Toronto starting at 7pm et/4pm pt.

Dallas (11-5) was eighth in points per game and fourth in field-goal percentage last season, and after adding Parsons, Jameer Nelson and reacquiring Tyson Chandler, it's no surprise to see Rick Carlisle's club leading the league with 109.3 points per game.

The Raptors' emergence as one of the NBA's best offenses is turning a few more heads. Lou Williams was the only prominent addition to the top eight of Toronto's rotation, but the reserve guard has been a big reason the Raptors (13-2) have jumped from 13th in points per game (101.3) to second (108.0).

Williams burned his former team for 22 points in 26 minutes Wednesday, making him one of three Raptors with 20-plus in a 126-115 win at Atlanta. DeMar DeRozan led the way with 27, the third player to lead Toronto in scoring in as many games.

"Three nights in a row it's been somebody else stepping up," said Williams, who's averaged 24.3 points in his last four games. "It just shows the depth and the character of this team."

The Raptors haven't won seven straight since a nine-game run March 22-April 9, 2002. Toronto won 11 of 12 late in that season, a franchise-best stretch that was matched against the Hawks as seven Raptors scored in double figures.

"That's what it's going to take to win," DeRozan said of Toronto's scoring depth. "Honestly, that's what it's all about."

Dallas also has a six-game winning streak this season, but it was in danger of losing a third straight game Wednesday before rallying past New York 109-102 in overtime.

Like Williams did against his former club for Toronto, Chandler came up big against the Knicks. The Mavericks' big man had 17 points and 25 rebounds, helping Dallas outscore New York 50-24 in the paint.

Dirk Nowitzki had 30 points on 11-of-24 shooting, but he and Parsons combined to go 2 for 16 from 3-point range. The Mavericks are shooting 20 percent from beyond the arc in their last three games.

"I mean, we're not playing really well right now. I think that's pretty obvious," Nowitzki told the Mavericks' official website. "And we just had to find a way to steal this one, really."

The visit to Toronto is Dallas' first stop on a four-game trip, and there are a few signs it might not be a pleasant one beyond the Raptors' 9-1 home record and the potential absence of Nelson due to back spasms.

The Mavericks have averaged 117.0 points in nine games against teams with losing records, but that number falls to just 99.3 against those at .500 or better. They've scored 94.7 points per game and shot 39.2 percent in their last three road games against clubs with winning records.

Nowitzki is shooting 40.4 percent against winning teams and 59.8 percent against sub-.500 clubs.

He's missed two of Dallas' last three against Toronto, all losses. Carlisle opted to rest him during a busy stretch when the Mavericks visited Air Canada Centre on Jan. 22, and they certainly could've used him. DeRozan had a career-high 40 points in a 93-85 win.

Toronto overcame deficits of at least 19 points in both victories against Dallas last season.