Looking to bounce back to the heavyweight title picture, Peter faced Eddie Chambers on 27 March 2009. The fight took place in Nokia Theatre in Los Angeles, and was aired on ESPN2. Chambers injured his right thumb early in the third round, but was able to outbox Peter for the majority of the fight, frustrating his opponent with speed and quickness and being able to block most of Peter's shots using his gloves and armes. As a result, Chambers was declared the winner by majority decision, with the judges scoring the bout 99–91, 96–94 and 95–95. Some observers criticized the 95–95 score, believing Peter had not done enough to win more than three rounds.