On pace to finish with 114 points, Carlson would be the first defenseman to reach 100 since Brian Leetch of the New York Rangers had 102 (22 goals, 80 assists) in 1991-92.
The only defensemen in NHL history to finish with more than 114 points in a season were Orr (139 in 1970-71, 135 in 1974-75, 122 in 1973-74, 120 in 1969-70, 117 in 1971-72) and Paul Coffey (138 in 1985-86, 126 in 1983-84 and 121 in 1984-85) with the Edmonton Oilers.
Carlson, who had a career-high 70 points last season (13 goals, 57 assists), doesn't consider himself near the level of Orr, Coffey, who won the Norris three times, or Leetch, a two-time winner.
"They're obviously Hall of Fame players that had really good careers," Carlson said. "It's pretty cool, but I'm not in the same realm as them."
Superstitious, Orr declined a request to talk about Carlson's season. Through his agency, Orr said, "If I could, I'd tell you how proud I am of what he's accomplished so far this season, but I can't because I don't want to jinx him."
Carlson laughed when he heard that. He and Orr talk on the phone or text occasionally and he knows Orr is following him closely.
"He's always trying to angle some way or another," Carlson said. "But I see him a couple times a year and we chat here and there throughout the season."
Leetch, a 2009 Hockey Hall of Fame inductee who works for the Rangers as an adviser, has also been watching Carlson and said he believes Carlson has a good chance to reach 100 points.
"He's got a lot of things that have to happen to go that way with a good team and he plays all the minutes and he's got goal scorers on there and he's getting good looks, too," Leetch said. "It's all working right now, so it's possible, no question about it."
Carlson is eighth in the NHL in averaging 24:58 in ice time per game and plays in all situations -- even-strength, power play and penalty kill. The Capitals lead the NHL with 112 goals and have a League-high six players who have scored at least 10: Alex Ovechkin (20), Jakub Vrana (15), Evgeny Kuznetsov (12), Tom Wilson (11), T.J. Oshie (11) and Carlson (11).
So Carlson has plenty of opportunities to create and finish scoring chances.
"I just try to work my hardest and make as many plays as I can," Carlson said.