The only question now, however, is if each team has what it takes to stay in its division race.
The surprising Kings and Thrashers both look to continue their recent strong play when the teams meet for the only time this season.
Heatley, who led the team with 41 goals last season, injured his knee in the Sept. 29 accident that resulted in him being charged with vehicular homicide.
The Thrashers rallied around each other following the tragedy, and have gone on to battle the Tampa Bay Lightning for the top spot in the Southeast Division. Atlanta, which is 14-11-3-1, didn't record its 14th win until Jan. 17 last season.
Atlanta won its second straight game Saturday, coming from behind to beat the Florida Panthers 4-3 in overtime.
The Thrashers trailed 3-1 in the second period when Shawn McEachern began Atlanta's comeback with his fifth goal of the season. Ben Simon tied it with his first NHL goal at 9:49 of the third, and Vyacheslav Kozlov won it for Atlanta 2:57 into overtime.
"I'm pretty happy," said Simon, who was reacquired by Atlanta last week. "I'm not really a goal scorer. But I'll take what I can get. It's pretty neat to be able to say you scored in the NHL."
Los Angeles came into this season hoping to avoid the injury bug that derailed its chances of making the playoffs last season.
The Kings have had many injuries this season, but they've overcome them to move into first place in the Pacific Division.
Los Angeles began a four-game road trip with a 3-2 overtime loss to the Detroit Red Wings on Monday, but earned at least one point for the fifth time in six games (4-1-0-1).
The Kings rallied from a 2-0 third-period deficit on goals by Michael Cammalleri with 9:06 left and Martin Straka with 2:10 remaining to force overtime, but Brett Hull moved into third place on the NHL career goal list by scoring 1:51 into overtime to give Detroit the win.
"We're not happy with the way we played in the first period," Kings forward Luc Robitaille said. "The Wings play that puck possession and you have to be patient. It's a big point for us."
Los Angeles has never lost in regulation to Atlanta, going 6-0-0-1 in the series since the Thrashers joined the league in 1999.