England prop Kyle Sinckler will miss their Six Nations opener against Scotland, after being hit with a two-week ban for swearing at a match referee.
Sinckler has appeared before a citing panel and was found guilty of "failing to accept the authority of the match official", after swearing at Karl Dickson - his former Harlequins teammate for six years - during Bristol's win over Exeter.
The 27-year-old Bears prop said to Dickson "are you f**king serious?", after the official ruled there was no foul play in a no-arms tackle by England colleague Luke Cowan-Dickie - a decision he reversed, after review with the video official.
Sinckler will be unavailable England's opening Six Nations match against Scotland at Twickenham on February 7, as well as Bristol's next Premiership game.
Sinckler has already apologised for the incident on social media.
"Want to apologise for my reaction today," he tweeted. "Not the example I want to be setting.
"Heat of the moment stuff. Will make a conscious effort to improve. My bad."
