Hamlin, Logano square off on Twitter

The gloves are off for Denny Hamlin and Joey Logano.

Obviously frustrated by his 14th-place finish Sunday in the NASCAR Sprint Cup Daytona 500, the Joe Gibbs Racing driver took to Twitter to voice his frustration against former teammate Logano, now with Penske Racing.

But it was done in a very subtle way:

@dennyhamlin: ". @keselowski sorry I couldn't get close to you cuz your genius teammate was too busy messing up the inside line 1 move at a time"

Logano, who finished 19th, didn't take the insult laying down — and wasn't as subtle.

@joeylogano: @dennyhamlin I Remember when you were MY genius teammate. #LoveYouMeanIt