Lloyd Harris is currently coached by former Belgian player Xavier Malisse. Harris trained at the Anthony Harris Tennis Academy under coach Anthony Harris (no relation) since he was 15.

Lloyd Harris continues to work with Anthony Harris to this day. As a child, he was coached by Norman McCarthy.

At the 2021 US Open, Harris reached the quarterfinals, where he lost to Alexander Zverev. Along the way, Harris beat Karen Khachanov, Denis Shapovalov, and Reilly Opelka.

Harris has represented South Africa in Davis Cup. After his impressive run, Lloyd Harris moved to the Top 40 in world rankings.