Mark Sanchez is banging Kate Upton!?!?!?!

Per NY Post:

Jets quarterback Mark Sanchez may be limbering up for his big game on Christmas Eve against the Giants, but he’s also been keeping time with curvaceous beauty Kate Upton.

Sanchez has been paying frequent late-night visits to the Victoria’s Secret and Sports Illustrated swimsuit model’s Flatiron apartment, we’re told. He’s been spotted several times at the voluptuous blonde’s pad since November, usually after games or before practices — sometimes as late as midnight — rolling up in his black chauffeur-driven Navigator.

Sanchez was even seen in Upton’s building lobby carrying gifts for her after he attended a charity event early last month. On another occasion, Sanchez was spotted coming into the building with bags a minute or two after Upton arrived.

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ZUMAPRESS.com

Kate Upton

“They never come in together. He’s always five steps after her,” our source told us, adding that Sanchez often hides under a woolly hat. Sexy Upton has also attended some Jets games as her sister, Christie Upton, is a manager of client relations for the team and works closely with Sanchez.

Another source insisted that Upton and Sanchez are “just friends.”

Last week, we revealed Sanchez was also spotted entertaining two mystery women in one night at the Moderne Hotel.

He checked in with an alluring Spanish-looking brunette at 3 a.m., and after she left, an attractive blonde joined him in his room for just over an hour before they left at the same time. It is not clear whether this was Upton or her sister.

A rep for Upton, who was last year briefly linked to Kanye West, declined to comment on her personal life. Sanchez’s reps didn’t get back to us.

The Jets QB has been linked to a string of beauties since he arrived here two years ago, including actresses Jamie-Lynn Sigler and Hayden Panettiere, who’s now dating his teammate Scotty McKnight.

In January, he reportedly wooed Eliza Kruger, then 17, after meeting her at Lavo.