The remaining jewel was finally etched into Roger Federer's ridiculously large crown this weekend as he and his Swiss teammates finally managed to get their hands on the Davis Cup crown.
Smiles, cheers and general elation were enjoyed by the Swiss team in Lille - the first time that the Europeans have ever won the coveted trophy - but those kind of scenes had been placed in serious jeopardy less than a week beforehand.
The heroes of the hour, Federer and Stan Wawrinka, produced easily the best match of the ATP World Tour Finals in London last week, but the former's marathon win was believed to have drove a wedge between them.
BROS BEFORE WIFE?
I'm sure all you tennis fans know the story now but Wawrinka was apparently upset at Roger's wife, Mirka Federer, for her incessant and loud chanting between points. Cross word were said to have been exchanged between the two stars in the locker-room afterwards.
Perhaps prompted, perhaps genuine, but the pair - supposedly good friends off-court - were quick to kiss and makeup in front of the cameras; they certainly needed to kill the story dead before the country's biggest international match since they lost at the same stage in 1992.
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Nonetheless, with something as close to home as an argument between a friend and wife, it must have been a tad more difficult for the 17-time Grand Slam champion to concentrate and conquer.
ROGER THE GREAT
Conquer he did though...
The 33-year-old didn't even let an opening rubber defeat to Gael Monfils spoil one of his twilight shows.
Davis Cup matches are defined by the partisan crowd - so when Wawrinka and Federer joined up for a doubles encounter tied 1-1 with the French on home soil, they could ill afford to show any contempt for each other, and of course the model professionals didn't. Federer then finished it off alone against Richard Gasquet to spark jubilation.
For me, it shows the power of mind that Federer possess over anything else. Yes, lets celebrate his unbelievable collection of trophies. Literally anything he can win, he has won; Grand Slams (17), ATP Tour Finals titles (six), Olympic Gold and now the Davis Cup. Lets also marvel at the attitude that has got him there.
Injuries, poor form spells, world class rivals, lesser fancied surfaces and age: Federer has overcome all these issues at one point or another, and now he can add a wife/friend dispute.
Some other players on tour struggle with poor umpire decisions, hostile crowds or slight off-court agitation.
Andy Murray and Novak Djokovic have both been guilty of such recently. Murray lost it back at Wimbledon when his defence was ended by Grigor Dimitorv against the backdrop of a verbal tirade towards his team. Meanwhile Djokovic had an outburst at the London crowd last week in his semi-final against Kei Nishikori - it led to him losing his only set of the competition.
We hardly ever see Roger ruffled. Is it that mentality that ensures he is alone in the top echelon of men's tennis? - Quite possibly.