The following month, at Armageddon, Kurt Angle defeated Big Show to end his near one-month reign as WWE Champion. At the Royal Rumble, in January 2003, Angle defeated Chris Benoit to retain the title, and Brock Lesnar won the Royal Rumble match by last eliminating The Undertaker. Lesnar went on to defeat Angle for the WWE Championship two months later at WrestleMania XIX, pinning him after an F-5. Two months later, at Judgment Day, Lesnar defeated Big Show in a Stretcher match to retain the WWE Championship. Later that year, at Vengeance, Angle defeated Lesnar and Big Show in a No Disqualification Triple Threat match to become the new WWE Champion. Angle won the match after pinning Lesnar following an Angle Slam. Angle went on to defeat Lesnar and retain the WWE Championship the next month at SummerSlam, forcing him to submit with the Ankle lock. Lesnar then regained the WWE Championship from Angle on the September 18 episode of "SmackDown!", in an Iron Man match winning 5-4.