|Dates: 23 July-8 August Time in Tokyo: BST +8|
|Coverage: Watch live on BBC TV, BBC iPlayer, BBC Red Button and online; Listen on BBC Radio 5 Live, Sports Extra and Sounds; live text and video clips on BBC Sport website and app.|
Andy Murray and Joe Salisbury reached the men's doubles quarter-finals at the Tokyo Olympics while Liam Broady registered a stunning singles victory.
The British duo backed up their impressive opening-round win to beat Germany's Kevin Krawietz and Tim Puetz 6-2 7-6 (7-2).
Murray is bidding for his fourth Olympic medal and Salisbury his first.
World number 143 Broady, a late call-up to the squad, stunned Polish seventh seed Hubert Hurkacz 7-5 3-6 6-3.
On the eve of his Olympic debut, Broady said he did not want people to "look at me and think I'm making up the numbers".
Broady was only called up a week before the Games after British number ones Dan Evans and Johanna Konta contracted coronavirus.
His victory over Wimbledon semi-finalist and world number 12 Hurkacz is his first over a top-20 player.
Broady will now face France's Jeremy Chardy, while Murray and Salisbury will play Marin Cilic and Ivan Dodig of Croatia next.Day-by-day guide to the GamesTimes and channels for BBC's live coverageListen to the latest Olympics Daily podcastTokyo 2020 medal table
Murray 'physically OK' despite injuryJoe Salisbury and Andy Murray have yet to drop a set in Tokyo
Murray is bidding for a piece of history in Tokyo - no man has won four Olympic medals since tennis returned to the Games in 1988.
The Scot was advised not to compete in both the singles and doubles after picking up a minor thigh strain at the start of the Games and subsequently withdrew from the singles.
"When we spoke about playing, I told Joe that if I had any physical issues I'd prioritise doubles over singles and that's why I made the decision," Murray said.
"I'd have been annoyed with myself if I'd decided to play with the issue, made it worse, lost my singles and not been able to perform well in the doubles.
"Physically it'll be OK for the rest of the tournament, but I will need to take a break afterwards."
Greece's Stefanos Tsitsipas avenged his first-round Wimbledon loss with a 6-3 6-4 win over Tiafoe to reach the third round.
Argentine Diego Schwartzman also advanced, beating Czech Tomas Machac 6-4 7-5, while France's Chardyovercame Russian Aslan Karatsev 7-5 4-6 6-3.
Home favourite and second seed Naomi Osaka was earlier stunned in the third round by Marketa Vondrousova.
Can you get the UK talking? The BBC is looking for new voices to fund and support launch podcastsAmerica's 'Green Gold Rush': The cautionary tale of New Mexico's marijuana boom