"TUF 13" coach Brock Lesnar surprisingly "got invested" in his team

Somehow, the fighters on the 13th season of “The Ultimate Fighter” managed to crack Brock Lesnar’s sometimes-cold exterior.

The former champ didn’t have much of a choice, anyway. He was all-in once he accepted the job as a head coach.

But Lesnar al…

Somehow, the fighters on the 13th season of “The Ultimate Fighter” managed to crack Brock Lesnar’s sometimes-cold exterior.

The former champ didn’t have much of a choice, anyway. He was all-in once he accepted the job as a head coach.

But Lesnar also surprised himself in how emotionally involved he got when his team fought with Junior Dos Santos’ squad during the filming of the reality show, which debuts Wednesday on Spike TV.