HBO will announce next week that Jim Lampley will be joined ringside at the Dec. 10 Amir Khan-Lamont Peterson fight in Washington, D.C., by previously rotating commentators Larry Merchant and Max Kellerman.
The teaming has been described by one HBO official familiar with the deal as a "once and only" situation created by boxing commitments for expert analysts Roy Jones Jr., who has a fight against Max Alexander, and trainer Emanuel Steward.
Merchant, 80, has rotated color-commentatorduties with Kellerman, 38, since 2007, when an expiring Merchant contract led HBO to expand Kellerman's duties.
Merchant engaged in an entertaining post-fight exchange with Floyd Mayweather Jr. in September after Mayweather delivered a pair of punches that were legal but appeared to cross the line of good sportsmanship.
"You never give me a fair shake," Mayweather said on the broadcast, advising HBO to fire Merchant.
Kellerman worked Manny Pacquiao's close Nov. 13 decision over Juan Manuel Marquez and is assigned to Saturday's Miguel Cotto-Antonio Margarito rematch at Madison Square Garden.
Kellerman hosts a sports radio talk show weekdays on KSPN-AM (710).