what are the records held by mark mckoy in 50 metres hurdles, 60 metres hurdles, and 110 metres hurdles, and when were these records held?
mark mckoy holds the record for the 50 meter hurdles in 6.25 (1986), the 60 meter hurdles in 7.41 (1993), and the 110 meter hurdles in 13.08 (1993).