Aljaz Bedene's hopes of playing Davis Cup tennis for Great Britain have been dashed once again after he lost his latest appeal.
The 26-year-old, who was granted a British passport last March, presented his case to the International Tennis Federation board on Sunday.
He said: "Of course I am very sad with today's result and that it has not gone the way I had hoped.
"I would like to thank all the fans, my team and the LTA (Lawn Tennis Association) for continuing to support me all the way. I will have to assess my situation now before I decide on what steps to take next."
Bedene has fallen foul of a rule brought in at the start of 2015 preventing players competing for more than one country in the competition.
Because he played in three dead rubbers for his native Slovenia between 2010 and 2012, he is ineligible to represent Britain.
Davis Cup-winning captain Leon Smith has extended his contract and will lead the Great Britain team for at least another three years.
The Scot succeeded John Lloyd in 2010 after Britain had suffered the ignominy of defeat by Lithuania and were on the verge of relegation to the competition's bottom tier.
Five years later Smith achieved what had appeared impossible and guided his country to a first Davis Cup title in 79 years with victory over Belgium.
After signing a deal until the end of 2018, which will also see him remain as the Lawn Tennis Association's head of men's tennis, Smith said: "It is a huge honour and privilege to continue captaining our Davis Cup team.
"We have achieved so much over the last six years and becoming world champions last year will be the highlight of my career."
Andy Murray produced his most remarkable Davis Cup effort yet to hold off an inspired Kei Nishikori and send Great Britain through to the quarter-finals for a third straight year.
Murray led by two sets to love but faced losing from that position for the first time in 11 years only to grind out a 7-5 7-6 (8/6) 3-6 4-6 6-3 victory after four hours and 54 minutes at Birmingham's Barclaycard Arena.
That clinched a 3-1 first-round win over Japan for Britain, with Murray winning all three points for the fourth successive tie.
Great Britain captain Leon Smith reserved the highest praise for his main man, saying: "I'm pretty much lost for words. He's just a man of steel.
"You have to give a lot of credit to Kei. He played a great match, one of the best of his life I'm sure.
"It's quite astonishing considering Andy hasn't played since the Australian Open final. He's amazing. It's an absolute privilege to sit with him for a match like that and we'll remember that one for a very long time."
Andy Murray's appetite for another stellar Davis Cup run should see him partner brother Jamie in Saturday's doubles as Great Britain look to restore their lead over Japan.
The teams were tied at 1-1 after the first day of play at Birmingham's Barclaycard Arena, with Murray easing past Taro Daniel 6-1 6-3 6-1 before Kei Nishikori withstood a fierce challenge from Dan Evans to win 6-3 7-5 7-6 (7/3).
Murray's match was his first since becoming a father nearly a month ago and he was wary of committing to doubles as well as singles beforehand, but captain Leon Smith confirmed the plan is for the brothers to team up as they did successfully on three occasions last year.
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Prime minister David Cameron has met Great Britain's triumphant Davis Cup team at 10 Downing Street.
Team captain Leon Smith paraded the trophy alongside his team and Cameron after beating Belgian over the weekend.
British No.1 Andy Murray won his two single matches in Gent, as well as teaming up with brother Jamie for a victorious doubles match, as Great Britain won the trophy for the first time in 79 years.
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Former Davis Cup finalist John Lloyd led the tributes to Andy Murray, who ended Great Britain's 79-year wait for the famous trophyRead the full story ›
Andy Murray has beaten Belgian David Goffin to win the Davis Cup for Great Britain for the first time since 1936Read the full story ›