An NBA player being compared to Charles Barkley isn't always a good thing -- especially when it comes to golf ... because Mortiz Wagner is giving Chuck a run for his money for WORST SWING EVER!
NO EXAGGERATION -- THIS DUDE IS A PRO ATHLETE AND COULDN'T HIT THE BROAD SIDE OF A BARN!!
Here's the deal ... 22-year-old Mortiz joined the rest of his Washington Wizards teammates for an outing at Top Golf in Virginia on Monday -- and saying it went poorly for Wagner is a gross understatement.
Watch the vid .