Wimbledon tennis will be screened in 4K resolution and high dynamic range colour (HDR) by the BBC for the first time in the history of the tournament.
It follows a trial of the sharp image quality during the World Cup, despite a number of complaints from viewers about technical glitches with the format.
Like the World Cup, the BBC will allocate available slots for the 4K stream - also known as Ultra HD or UHD  - on a first-come-first-served basis.
The stream will be delivered to customers via BBC iPlayer, as well as Sky Q set-top boxes and PS4 Pro consoles.
Broadcasters have been able to broadcast sports coverage in UHD for years, but this latest step by the BBC signals its intent to keep pace with rivals including Sky Sports and BT Sport.
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Tottenham-based user Richard Easton said the delays meant he could not avoid spoilers






Tottenham-based user Richard Easton said the delays meant he could not avoid spoilers





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Others have also said the picture appears to dark and sounds cut in and out. 'I have found the UHD transmission too dark. On normal TV (SD and HD) and iPlayer (HD) colours are vibrant', wrote Twitter user Alloqui Strix