British number ones Andy Murray and Johanna Konta both recorded straight-set wins in their opening singles matches at the Rio 2016 Olympic Games.
Defending champion Murray, 29, beat Serbia's Viktor Troicki 6-3 6-2 to progress to the second round.
After losing his serve in the first game, the Scot went on to control the tempo of the match.
Konta, who won in the women's doubles alongside Heather Watson on Saturday, beat Stephanie Vogt 6-3 6-1.
The 25-year-old 10th seed had to see off two break points in the first set before taking control against Liechtenstein's world number 290.