Gennady Golovkin vs. Lajuan Simon
2011-12-09 : Gennady Golovkin 158½ lbs beat Lajuan Simon 156½ lbs by KO at 2:17 in round 1 of 12
- Location: Ballsaal Interconti-Hotel, Düsseldorf, Nordrhein-Westfalen, Germany
- Referee: Jose Ignacio Martinez
- Judge: Pawel Kardyni
- Judge: Philippe Verbeke
- Judge: Artur Ellensohn
- World Boxing Association World Middleweight Title (3rd defense by Golovkin)
- IBO Middleweight Title (vacant)
- Gennady Golovkin 21-0 (18 KOs) vs. Lajuan Simon 23-3-2 (12 KOs)
- Simon entered with a record of 2-3 in his previous five.
- It was the first knockout loss of Simon's professional career.
Golovkin landed a pair of solid right hands early. Golovkin landed a left hook that caught Simon coming forward and put him flat on his back. Simon made no attempt to get to his feet as the referee reached the count of ten.