Table:
text: Cyrille Diabaté
Mixed martial arts record
Mixed martial arts record
Res_ Record Opponent Method_ Event Round Time_ Location_
Loss 10–6–1 Maurício Rua TKO (stomps) Pride Final Conflict Absolute 1 5:29 Saitama , Japan
Win 10–5–1 Yasuhito Namekawa KO (flying knee) Real Rhythm: 4th Stage 2 1:50 Osaka , Japan
Win 9–5–1 Yasuhito Namekawa KO (punches) DEEP: 24 Impact 2 2:22 Tokyo , Japan
Win 8–5–1 Takahiro Oba Submission (rear naked choke) Real Rhythm: 3rd Stage 2 3:47 Osaka , Japan
Win 7–5–1 Mu Jin-Na KO (head kick & punches) Real Rhythm: 2nd Stage 1 1:28 Osaka , Japan
Loss 6–5–1 Fábio Piamonte Submission (arm triangle choke) Cage Rage 12 1 2:09 London , England
Loss 6–4–1 Renato Sobral Submission (guillotine choke) Cage Rage 9 1 3:38 London , England

Question: Which event in Cyrille Diabaté's mixed martial arts record had a record of 8-5-1?