Robert Guerrero vs. Michael Katsidis
2011-04-09 : Robert Guerrero 134 lbs beat Michael Katsidis 134 lbs by UD in round 12 of 12
- Location: MGM Grand, Las Vegas, Nevada, USA
- Referee: Russell Mora
- Judge: Patricia Morse Jarman 117-108
- Judge: Dave Moretti 118-106
- Judge: C.J. Ross 118-107
- Robert Guerrero 28-1-1 (18 KOs) vs. Michael Katsidis 27-3 (22 KOs)
- Guerrero entered as the WBA # 1 and WBO # 1 lightweight contender, while Katsidis entered as the WBA # 2 and WBO # 3 lightweight contender.
- Guerrero entered as the # 9 lightweight in the world according to The Ring Magazine. Katsidis, a 1.9/1 betting underdog , was ranked as the # 4 lightweight by the same publication.