Red Sox manager diagnosed with cancer, will miss rest of season

Aug 9, 2015; Detroit, MI, USA; Boston Red Sox manager John Farrell (53) in the dugout before the game against the Detroit Tigers at Comerica Park. (Rick Osentoski/USA Today Sports)

Jul 17, 2015; Anaheim, CA, USA; Boston Red Sox manager John Farrell (53) reacts during the eighth inning against the Los Angeles Angels at Angel Stadium of Anaheim. (Richard Mackson/USA Today Sports)

Jul 21, 2015; Houston, TX, USA; Boston Red Sox manager John Farrell (53) before a game against the Houston Astros at Minute Maid Park. (Troy Taormina/USA Today Sports)

Jul 21, 2015; Houston, TX, USA; Boston Red Sox manager John Farrell (53) walks off the mound after a pitching change during the fifth inning against the Houston Astros at Minute Maid Park. (Troy Taormina/USA Today Sports)

Aug 11, 2015; Miami, FL, USA; Boston Red Sox manager John Farrell before a game against the Miami Marlins at Marlins Park. (Robert Mayer/USA Today Sports)

Boston Red Sox manager John Farrell has been diagnosed with early-stage cancer and will miss the rest of the season as he undergoes treatment.

Farrell, 53, made the announcement Friday, saying the Stage 1 lymphoma was discovered when he underwent hernia surgery earlier this week in Detroit.

“Thankfully, it was detected in the hernia surgery, so I can honestly tell you that I’m extremely fortunate that it was found,” Farrell said.

He will begin a nine-week treatment plan Tuesday at Mass General Hospital in Boston, and Farrell said he expects to return to his job next season.

Bench coach Torey Lovullo will manage the team for the rest of this season.