 Complete the following phrase:  The first Ukrainian national record, which is known to be ratified, dates back to 1921. Up until 1977, the national governing body ratified only hand-timed results as records. Starting from 1977 the year of introducing the mandatory automatic time measurement in sprint events, Ukrainian governing body in athletics started keeping the auto-timed national records in 100 metres. It was the result of Valeriy Borzov 10.07, his winning time in the 