1:10 PM -- Bijan Robinson is perfect no more ... Marquette just ruined the NFL star's previously unblemished NCAA tournament bracket.

The No. 2-seed Golden Eagles defeated No. 15-seed Western Kentucky, 87-69, making it the only game so far that Robinson hasn't gotten right.

What a run!!!

NCAA tournament bracket already busted? Bijan Robinson can't relate -- the NFL superstar is perfect through Day One!!

The Atlanta Falcons tailback didn't get one of his 16 picks wrong on Thursday -- somehow nailing Oakland's upset over Kentucky AND Duquesne's big victory over BYU.

The feat is incredibly rare ... out of the 22 million-or-so brackets that were filled out this week -- less than 2,000 remain unblemished!!

The 22-year-old was thrilled to be right ... he posted a pic to his Instagram page late Thursday night, flashing a million-dollar grin with the caption, "They said it was crazy."

"Yessirski," he added.

The running back will have quite the hill to climb in order to stay undefeated going forward. He's got No. 11-seed North Carolina State and No. 12-seed Grand Canyon advancing to the Elite Eight ... as well as his alma mater, Texas -- a No. 7 seed -- winning the whole thing.

But, hey, if the guy made it this far this good, perhaps the choices aren't that wild after all!!

His NFL team, meanwhile, celebrated the feat with a late-night tweet Thursday -- writing, "A PERFECT bracket for @Bijan5Robinson on day one?! 🤯"

Tip-off for Day Two is just a couple hours away -- if you need betting tips for the afternoon, probably best to check out Robinson's bracket above!!