Donald Cerrone, known for his love of staying active, is fast becoming the busiest fighter in the UFC.
UFC president Dana White announced Monday that Cerrone (25-6) has agreed to replace Eddie Alvarez in the co-main event of a UFC Fight Night next weekend in Boston. Alvarez withdrew due to "personal matters," according to the UFC.
Cerrone will now meet former lightweight champion Ben Henderson on Jan. 18 at TD Garden. No timetable was given for Alvarez' return.
The announcement comes less than 48 hours after Cerrone defeated Myles Jury via unanimous decision at UFC 182 in Las Vegas.
It will mark Cerrone's sixth professional fight in a one-year span. Fighting out of Jackson-Winkeljohn MMA in Albuquerque, New Mexico, Cerrone went 4-0 in 2014, including three finishes.
Cerrone and Henderson (21-4) have previously met twice under the WEC banner. Henderson sits at 2-0 in the head-to-head.
The two produced a Fight of the Year candidate in October 2009, with Henderson edging Cerrone via unanimous decision.
They fought again six months later for the WEC lightweight title. Henderson submitted Cerrone in the first round via guillotine choke.
Henderson is coming off a first-round knockout loss to Rafael dos Anjos in August. He won the UFC 155-pound title in February 2012, recording three successful title defenses before forfeiting it to current champion Anthony Pettis in August 2013.
Fighting out of MMA Lab in Glendale, Arizona, Henderson is 2-2 in his last four fights.
ESPN.com ranks Cerrone and Henderson the Nos. 4 and 6 lightweights in the world.