After his loss to Steiner, Goldberg's rivalry with Russo accelerated and in October, having finally had enough, Russo gave Goldberg an ultimatum. If Goldberg was to lose another match at any point in time, unless he managed to duplicate his undefeated streak from 1997 to 1998, he would be forced to retire from professional wrestling. Goldberg defeated KroniK (Brian Adams and Bryan Clark) at Halloween Havoc in a handicap elimination match. He then started a feud with Lex Luger. This culminated in a match at Mayhem, which Goldberg won. They continued their rivalry and battled in a rematch at Starrcade. Goldberg won the match, but afterwards he was attacked by Luger's partner Buff Bagwell. Goldberg feuded with both Luger and Bagwell, who called themselves "Totally Buffed". His streak was broken at Sin when Goldberg, teaming with his Power Plant trainer DeWayne Bruce, lost to Totally Buffed in a tag team no disqualification match after a "fan" maced him, enabling Totally Buffed to pin him. The storyline was intended to enable Goldberg to have shoulder surgery, but WCW was sold to the WWF in March 2001, while Goldberg was still recuperating. The WWF did not buy out Goldberg's contract with AOL Time Warner (the parent company of WCW) as they had done with several other WCW wrestlers, due to Goldberg still being paid out a significant amount of money by AOL Time Warner that he was owed, so he was not involved in the WWF "Invasion" angle. Goldberg instead remained under contract to AOL Time Warner until May 2002, when he agreed on a contract buyout. He was WCW's highest paid athlete, alongside Bret Hart, earning 2.5 million dollars per year, a sum which would have risen to 3.5 million in the final year of his contract, due to have expired in July 2003.