Former Boston Celtics Player Kendrick Perkins says Rajon Rondo and Ray Allen once held a boxing match, while beefing with each other.

Rajon Rondo, Ray Allen, BoxingRonald Martinez / Getty Images

"It was a point in time where Rondo was up there as probably like top five point guards in the league," Perkins explained in an interview on SiriusXM NBA Radio, this week. "You had Derrick Rose, you had Chris Paul, and then the next person that was coming to mind was Rondo. Like a Tony Parker, but Rondo was right there. He was making multiple All-Star games, breaking assists records, getting triple-doubles. ... And it was the 2009-2010 season—no, 2008-2009, where [it] came up that, you know, New Orleans was—Chris Paul wanted out, I guess. And it was rumors started to circulate and it was brought to the table that what if we trade Rondo and get CP." 

Celtics players were generally against the idea of the trade, but Ray Allen was vocal about being in favor of the deal behind Rondo's back. Word eventually got back to Rondo and the two had it out for each other.

"It was even to the point where we brought boxing gloves to the gym and they got on boxing gloves," Perkins added. "We made them box it out for like two rounds."