He has now won seven straight contests since getting knocked out in round one by Leva Kirakosyan in December 2004.

BBC: SPORT | Boxing | Johanneson too good for Fehintola

Grant Fredericks is a forensic video analyst and instructor at the Law Enforcement and Emergency Services Video Association (LEVA) in Indianapolis.

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After gathering those 5, 000 hours of footage, Vancouver police then contacted LEVA through the Forensic Video Analysis Response Team to go through all that video.

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The victory was Johanneson's 24th from 26 fights and his sixth straight win inside the distance since he was knocked out in the first round by Russian Leva Kyrakosyan in 2004.

BBC: SPORT | Boxing | Stoppage gives Johanneson title