John McEnroe promised Team World would bounce back after suffering a 14-1 thrashing by Team Europe at the Laver Cup in Boston.
Europe wrapped up a fourth consecutive Laver Cup triumph as Andrey Rublev and Alexander Zverev capped off a dominant performance.
Having won all four matches on Saturday, Europe needed just one more victory to again retain the trophy, preserving their record of having won each edition of the tournament.
That duly arrived as Rublev and Zverev prevailed against Reilly Opelka and Denis Shapovalov in their doubles clash.
They emerged 6-2 6-7 (4-7) 10-3 victors, to spark European celebrations.
Next year's match will be played in London, and Team World captain McEnroe said: "No one wins the Laver Cup, beats us, John McEnroe, five times in a row. You've got to keep going.
"Team Europe is a great team, no question, incredible team. They had good team spirit. We did, as well."
McEnroe, quoted on the Laver Cup website, added: "If you get a couple of different results, we could have put more pressure on them. But we just came up short in four tiebreakers. You win half those, it's totally different story. We gave it our best, but they were just too good."
Zverev reflected on Europe's win, saying: "The score says that it was 14-1, but it could have gone both ways a lot of the time.
"We [did] a lot of hard work for this victory throughout the whole week. The group of this team has been absolutely amazing.
"I think a lot of us came a lot closer together and to be honest I can't wait for London next year."