Tennis fans tuning into the Australian Open may have caught sight of Reshard Langford while watching the likes of Madison Keys ... and then triumphed over Lorenzo Sonego in the quarter-finals.

Watch Lorenzo Sonego score an incredible winner with a volley that spins back over the net during his Australian Open quarter-final defeat by Ben Shelton. READ MORE: Sinner dismisses health fears ...

Let's take a look at the Top 10 biggest upsets of 2020. Lorenzo Sonego became extremely lucky in the Vienna Open when he was granted entry as a lucky loser. He made the most of it by taking down ...