If you were impressed with Johnny Manziel's basic slam dunk a few weeks ago ... wait'll you see the Texas A&M quarterback pull of 4 TRICK JAMS ... including a reverse 360!!!
Manziel posted a new video today, in which he pulls off 4 dunks -- including two tricks where a friend threw him an alley-oop off the gym wall and he slams it home ... a la LeBron James.
While it's clear the guy's got skills, there's still room for improvement ... the first two dunks were nice, but the second two weren't exactly clean.
Still, pretty damn impressive ... for a quarterback.
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