According to ESPN.com's Courtney Cronin, for all the ways the Vikings' offense has improved with the addition of Kirk Cousins, there’s one glaring outlier causing concern.

Since becoming a starting quarterback for the Washington Redskins in 2015, Cousins leads the NFL in fumbles with 37, having lost 16, also a league-high, according to ESPN Stats & Information. It’s an issue that’s not just limited to his NFL career. As a senior at Michigan State in 2011, Cousins’ eight fumbles were tied for the second-most in the Big Ten.

Cousins has six fumbles in the Vikings' past four games, four of which were recovered by the other team.

And with every turnover created by a Cousins fumble, Minnesota’s opponent was able to capitalize.

“I’m concerned about all the fumbles. We’ve got to do a better job,” head coach Mike Zimmer told Cronin. “I think the two times, the two that I remember that he fumbled, both times guys were coming from behind him. He’s got to, when he starts moving up in the pocket, he has to be ready to put the ball [away], so we’ll address that.”

So yes, it's an issue -- one that Cousins has been trying to address it throughout his career. So far, he hasn’t fixed it.

That said, the production has been just fine as Cousins sits at QB 6 on our current rankings with 1,921 passing yards and 12 passing TDs.