Serena Williams opened defense of her Olympic singles gold medal with a patchy-at-times 6-4, 6-2 victory over Australia's Daria Gavrilova.
Sunday's match at the Rio de Janeiro games was Williams' first since she won her Open-era record-tying 22nd Grand Slam title at Wimbledon last month.
The American, seeded No. 1, was hardly at her best in the 91-minute contest, compiling 37 unforced errors to 27 winners, and she got broken at love while serving for the first set at 5-3. But Williams broke right back in the next game.
Williams is scheduled to play doubles with her older sister Venus later Sunday.
The younger Williams owns four gold medals — in singles at London four years ago, and in doubles in 2000, 2008 and 2012.
Sunday's order of play is essentially a list of the sport's biggest names. Serena Williams will be followed by the defending gold medalist in men's singles (and silver medalist in mixed doubles) Andy Murray of Great Britain.
Meanwhile, World No. 2 Angelique Kerber of Germany begins her quest for her first Olympic singles medal on court 1. She’ll play Colombia’s Mariana Duque-Marino tomorrow morning. After that match ends, Spain’s World No. 5 Rafael Nadal of Spain will play his first round match.
The top three seeds of each singles competition will make appearances tomorrow.
Those hoping to catch Serbia’s World No. 1 men’s singles player – Novak Djokovic, who’s looking to complete the elusive career golden Slam – will have to wait until the evening. He’ll appear on Centre Court to play Argentina’s Juan Martin del Potro in a rematch of the London 2012 Games Bronze Medal Match – which the Argentine won.
You can find a full tennis schedule, along with relevant streams, here.