After defeating two journeymen, Brock was given a spot in the 4-man elimination tournament to receive a shot at the IBF world heavyweight championship. In semifinals, Brock faced undefeated prospect Eddie Chambers. In the build-up to the fight, Brock claimed to be in the best shape of his career. Brock weighed in at 241 lbs, the heaviest in his entire career and almost 17 lbs heavier than in his bout against Klitschko. The additional weight appeared to be muscle. The fight took place in Emerald Queen Casino in Tacoma, Washington and was aired live on Showtime. Chambers appeared to have had the upper hand in the fight, effectively using his hand speed and upper-body movement, and was declared the winner by split decision, with two judges scoring the bout 115–113 in favor of Chambers, while the third judge had the same score but in favor of Brock.