Blake was an All-South Carolina receiver twice as well as being selected a Sunkist Prep All-American at Summerville High. Harry also led his team to state AAA championship his senior year. He has been clocked several times at 9.4 in 100-yard dash. Harry was nicknamed "The Snake" from high school days in South Carolina because of his striking ability in breaking for the long pass. While at WVU, he still held the state record for 100-, 200-, and 400-yard dashes as well as the high hurdles and the broad jump in South Carolina. Harry was the first trackman in WVU history to own seven team records. He holds individual records in 100-yard dash, 220-yard dash and the 440-yard dash. He was also a member of four relay teams that set new school records—the 440-yard relay, the 880-yard relay, the mile relay and the sprint medley relay. He was voted the Outstanding Track Athlete his junior year at the All-Sport Banquet for his record breaking performances. He was also chosen as the outstanding trackman in all three of WVU's home meets his junior year.