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Jeter having a beach ball

It’s good to be Derek Jeter.

The star of the world champ Yankees has been spending his post-postseason down time frolicking on the beach with his squeeze, “Friday Night Lights” babe Minka Kelly.

The shortstop and his gorgeous gal pal are staying at a luxury beach house in St. Barts.

SEE MORE PHOTOS OF DEREK JETER AND MINKA KELLY’S CARIBBEAN VACATION

A photographer snapped red-hot shots of the super couple yesterday as they swam, dived, snorkeled and played volleyball in the Caribbean paradise.

Kelly, 29, sizzled in a yellow bikini bottom and turquoise top.

The buff Jeter, 35, sported fashionable blue and white checkered swimming trunks — a treat for female Yankee fans who usually see the stud only in pinstripes.

The couple arrived over the weekend, and only a handful of other guests have caught glimpses of them on the beach.

The Yankee captain, a perennial bachelor, seems to be running the bases exclusively with the smoking-hot Kelly.

The two were spotted partying at 1OAK in Chelsea immediately after the Yanks’ World Series triumph, and they stood hand in hand in the Bombers’ victory parade.

Page Six reported in August that Jeter and Kelly have been coyly telling pals to be prepared for a wedding soon.

david.li@nypost.com