Table:
text: Mikhail Ilyukhin
Mixed martial arts record
Mixed martial arts record
Res_ Record Opponent Method_ Round Location_
Loss 15-6 Kiyoshi Tamura Submission 1 Tokyo , Japan
Win 15-5 Volk Han Submission 1 Fukuoka, Japan
Win 14-5 Tsuyoshi Kohsaka Submission 1 Osaka, Japan
Win 13-5 Masayuki Naruse Submission (ankle lock) 1 Tokyo , Japan
Loss 12-5 Tsuyoshi Kohsaka Submission 1 Tokyo , Japan
Loss 12-4 Kiyoshi Tamura Submission 1 Nagoya, Japan
Loss 12-3 Adilson Lima Submission (armbar) 1 Tokyo , Japan
Win 12-2 Sidney Goncalves Freitas Submission (chin in the eye) 1 Japan
Loss 11-2 Carlos Barreto Submission (rear naked choke) 2 Japan
Win 11-1 Wataru Sakata Submission 1 Tokyo , Japan
Loss 10-1 Ricardo Morais Submission (rear naked choke) 1 Moscow , Russia

Question: What round did the fight last when Mikhail Ilyukhin's record was 15-5?