DALLAS -- Dirk Nowitzki's sinus infection and the ensuing storyline apparently was a source of amusement for Miami Heat superstars Dwyane Wade and LeBron James before Game 5.

As they walked out of American Airlines Center after Thursday morning's shootaround, Wade and James pretended to cough and wheeze, smirking as they repeatedly covered their mouths with their shirts while being filmed by Miami CBS affiliate WFOR.

"Whoa, did y'all hear me cough? I think I'm sick," Wade said before turning toward James and chuckling.

This came two days after Nowitzki scored 21 points, including a critical driving layup in the last minute, while playing with a 101-degree fever during the Dallas Mavericks' NBA Finals-tying Game 4 win.

Given the chance to respond Friday night after the Mavericks landed in Miami, Nowitzki declined comment when reached by ESPN.com.