Harris took out one of Britain’s best Liam Broady in straight sets and the British No.41 described his darting talents which he gained during lockdown.
"I've got a dartboard in my house so I've been playing a lot of darts - I'm on about 45 180s since lockdown!" the 25-year-old said.
"I played a little bit before lockdown but I put in many hours on the board - it was a solid couple of hours, if not a few, a day.
"I watched the World Matchplay competition - I'm keen on the darts! Michael van Gerwen's probably my favourite player.
"Concentration is definitely a lesson we, as tennis players, can learn from darts players - getting that last treble is like match point for us! My quickest leg is a 12-darter, so I was happy with that.
"My tennis went downhill a bit but my darts level is sky high!"