The Olympic match
The International Tennis Federation's Tokyo report records Sara Sorribes Tormo beating Ashleigh Barty in straight sets, 6–4, 6–3. It was a first-round singles upset of the world number one, bringing Barty's singles title bid to an early end. The tournament carried the Tokyo 2020 name despite taking place in July 2021.
Source [1]One draw does not describe every event
Barty also competed with John Peers in mixed doubles; the ITF later reported that pairing reaching the semifinals. A singles elimination therefore did not mean every part of her Olympic participation had ended. Olympic tennis has separate singles, doubles and mixed-doubles draws, with different partners and medal paths. Raducanu's US Open run later in 2021 offers another contrast: a Grand Slam qualifying route and an Olympic draw are different competition structures, even when familiar tennis names appear in both.
Source [2]