Briton Dan Evans surged into the Delray Seaside Launch quarter-finals in Florida with an emphatic 6-0 6-2 spend against South African wildcard Lloyd Harris.
The 28-year-aged British amount three, a qualifier on this match, won the indispensable nine games and secured a joyful victory in an hour and eight minutes.
Evans, who beat defending champion Frances Tiafoe within the old round, faces Italian Andreas Seppi subsequent.
Sixth seed Seppi beat Australian Jordan Thompson 7-5 6-1.
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