VIDEO: LeBron James, Iman Shumpert exchange huge pregame dunks

Given that LeBron James has yet to take part in a dunk contest through his first 12 seasons, it seems unlikely he ever will. Fans will have to settle for James's impromptu, high-flying pregame routines when they're lucky enough to catch a glimpse of one.

Luckily, Cleveland Cavaliers teammate Iman Shumpert shared video of a quick dunk-off he and James participated in before Sunday's victory over the Orlando Magic.

Winners of 24 of their last 29, this was probably the most competitive thing the Cavs have taken part in lately.

As LeBron himself would say, they ain't got no worries.