Giancarlo Stanton’s rumored girlfriend watches Yankees implode

Not even model Chase Carter could salvage the Yankees’ lost weekend in Boston.

Trekking to Fenway on Saturday, Giancarlo Stanton’s rumored gal pal took to Instagram, where she showcased her Yankees gear and super-sized beverage at the ballpark.

“Come on American this is your small,” the Bahamian native quipped, before correcting herself, according to SportsGossip.com. “Meant to say America whoops good one Chase.”

The Yankees fell to the Red Sox 4-1 on Saturday. Boston swept the Yankees in the series that ended with Sunday’s 5-4 comeback victory.

“It was a tough way to end a tough weekend,” said Yankees manager Aaron Boone.

First linked in July, Stanton, 28, and Carter, 21, enjoyed the All-Star…