In the 2009–10 ISU Speed Skating World Cup 500m race, Lee Kang-seok used less time than Lee Kyou-hyuk and Keiichiro Nagashima.
In the 2009–10 ISU Speed Skating World Cup 500m race, Lee Kang-seok used less time than Lee Kyou-hyuk and Keiichiro Nagashima.