By John Morgan and Dann Stupp | January 1, 2015 10:30 am

Veteran middleweight Costas Philippou has been forced off this month’s UFC Fight Night 59 main card with an injury.

Sources close to the event told MMAjunkie that Philippou (13-4 MMA, 6-3 UFC) was forced out of his bout with Uriah Hall (9-4 MMA, 2-2 UFC) due to a rib injury. The sources spoke on the condition of anonymity because the UFC hasn’t made a formal announcement.

A replacement search is underway.

Featuring a featherweight headliner between Conor McGregor and Dennis Siver, UFC Fight Night 59 takes place Jan. 18 at Boston’s TD Arena. The bulk of the card airs on FOX Sports 1 following a pair of UFC Fight Pass prelims.

Philippou and Hall were actually slated to meet in a rematch at the event. Philippou won the duo’s first meeting via majority decision at Ring of Combat 34 in 2011.

More recently, Philippou, who’s ranked No. 13 in the USA TODAY Sports/MMAjunkie MMA middleweight rankings, snapped a two-fight skid with a highlight-reel knockout of Lorenz Larkin at UFC Fight Night 40 in May.

Hall, “The Ultimate Fighter 17” runner-up, recently halted a two-fight skid of his own with back-to-back wins over Chris Leben and Thiago Santos.

The latest UFC Fight Night 59 lineup now includes:

MAIN CARD (FOX Sports 1, 10 p.m. ET)

Conor McGregor vs. Dennis Siver Eddie Alvarez vs. Benson Henderson Uriah Hall vs. TBA Norman Parke vs. Gleison Tibau

PRELIMINARY CARD (FOX Sports 1, 7 p.m. ET)

Cathal Pendred vs. Sean Spencer John Howard vs. Lorenz Larkin Zhang Lipeng vs. Chris Wade Patrick Holohan vs. Shane Howell Johnny Case vs. Frankie Perez Charles Rosa vs. Sean Soriano

PRELIMINARY CARD (UFC Fight Pass, 6 p.m. ET)

Sean O’Connell vs. Matt Van Buren Tateki Matsuda vs. Joby Sanchez

For more on UFC Fight Night 59, check out the UFC Rumors section of the site.