Table:
text: Lee Hasdell
MMA record
MMA record
Res_ Record Opponent Method_ Event Round Time_ Location_
Loss 13–16–3 (1) Ivan Serati Submission (Rear Naked Choke) Cage Rage 24: Feel the Pain 2 1:34 London, England
Loss 13–15–3 (1) Mario Sperry Submission (Rear Naked Choke) Cage Rage 22: Hard as Hell 1 1:39 London, England
Win 13–14–3 (1) Hiroyuki Ito KO (Strikes) Pain and Glory 2004 1 0:32 Birmingham , England
Loss 12–14–3 (1) Fedor Emelianenko Submission (Guillotine Choke) Rings: World Title Series 5 1 4:10 Kanagawa , Japan
Win 12–13–3 (1) Georgi Tonkov KO (Flying Knee) Rings: World Title Series 4 1 4:22 Tokyo, Japan

Question: What was the method for Lee Hasdell opponent under Ivan Serati MMA record?