Murray misses Canada; Ecclestone out
‘Mental tiredness’ was said to have played a part in his defeat to the German Mischa Zverev in the fourth round.
Dan Evans, who was knocked out at the same stage, and Kyle Edmund will play singles in the tie, which begins on 3 February in Ottawa.
Doubles players Jamie Murray and Dom Inglot are likely to be part of captain Leon Smith’s team.
Canada will be led by world number three and 2016 Wimbledon singles finalist Milos Raonic.
Formula 1: Bernie Ecclestone has been ousted as head of Formula 1 following its $8 billion (£6.4bn) takeover of the sport by US giant Liberty Media.
The 86-year-old has been in charge for nearly 40 years but Chase Carey will now add Ecclestone’s former role as chief executive to his existing position of chairman.
Liberty has also hired ex-Mercedes team boss Ross Brawn to lead the sporting and technical side of F1. Former ESPN executive Sean Bratches has been hired to run the commercial side of the sport.
Mr Ecclestone told German magazine Auto Motor and Sport: “I was dismissed. This is official. I no longer run the company. My position has been taken by Chase Carey.”
Liberty completed its takeover after clearing the last two regulatory hurdles and Liberty Media is to be renamed the Formula 1 Group following the deal.
Mr Ecclestone was the key figure in turning F1 into one of the biggest television sports in the world after the Olympics and the football World Cup.
He sold Brabham in the late 1980s and took over the ownership of the commercial rights of F1 from the teams in the mid-1990s.
He later struck a deal in 2000 with his long-time ally Max Mosley, then president of the FIA, to lease them for 110 years at what critics said was a bargain price of $360m (£287m).
He added: “I’m proud of the business that I built over the past 40 years and all that I have achieved with Formula 1. I would like to thank all of the promoters, teams, sponsors and television companies that I have worked with.
“I’m very pleased that the business has been acquired by Liberty and that it intends to invest in the future of F1. I am sure that Chase will execute his role in a way that will benefit the sport.”