British teenager has crashed out of the Australian open in just the second round of the competition despite arriving on a wave of expectation following her US Open win in 2021.
Raducanu lost the first set 6-4 before rallying back to take set two 6-4 herself.
In the final set Raducanu regularly struggled with her back hand and Kovinic took full advantage going on to win the set 6-3.
Danka Kovinic said: “It was a really nice experience to play Emma here and make the third round of a Grand Slam for the first time after many years.
“I didn’t see the second round, I wanted to get through my first round and it was regular preparation. Emma has had amazing results, winning a Grand Slam at such a young age. She is an amazing talent. I’m just so happy I could play such a high level.
“I was a little bit low in my energy through the third set so I tried to focus on myself, not show much emotion and save my energy.”