 Complete the following phrase:  In 1977, Leonard was at the peak of his powers. He became the second athlete to run the 100 metres in less than 10 seconds with electronic timing, running in 9.98 s on August 11 in Guadalajara the first was 1968 Olympic champion Jim Hines, nowadays Leonard stands as the only Spanish-speaking 10-second barrier athlete. Leonard also had good speed endurance which he proved when he was the fastest in the world that year in the 200 metres with a time of 20.08 s. At the inaugural 