Former Dolphins QB Dan Marino Visits Jim Kelly at Hospital

April 3, 2014 Updated Apr 3, 2014 at 2:36 PM EDT

By Mitch Simon

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Credit: Jill Kelly/Instagram

Former Dolphins QB Dan Marino Visits Jim Kelly at Hospital

April 3, 2014 Updated Apr 3, 2014 at 2:36 PM EDT

NEW YORK CITY, N.Y. (WKBW) - They may have been rivals on the field, but they're good friends off the field.

Former Bills QB Jim Kelly's wife Jill posted this photo of former Miami Dolphins QB Dan Marino visiting Kelly at Lenox Hill Hospital in New York City Thursday.

Kelly and Marino played against each other during the Bills' glory days in the early 1990s.

Kelly is staying at Lenox Hill Hospital where he will undergo chemotherapy and radiation treatment for his cancer re-occurence next week.