Dineen is nursing a sore throat and didn't address the media following his team's morning skate. He will, however, be behind the bench Friday night.
Versteeg, who missed Wednesday's 4-2 victory over Washington, will take the place of Marco Sturm.
The veteran forward missed 14 games because of a concussion before returning to play 12:16 against Washington. Sturm was held out of practice Thursday for what was called a "maintenance day" and he also didn't take part in Friday's morning skate.
Scott Clemmensen, who stopped 41 of 44 shots in the Panthers' 4-3 shootout victory at Winnipeg on Jan. 21, will be in net for Florida.
It's not always going to be pretty, especially against a great goalie [Lundqvist] like that. My goals are never how you draw them up. It's just a matter of grinding it out and trying to create havoc in front and good things happen.
— Capitals forward Jay Beagle on scoring in their Game 3 victory against the Rangers on Monday