From Longman Dictionary of Contemporary Englishemphatic win/victory/defeatemphatic win/victory/defeata win etc in which one team or player wins by a large amount → emphatic
Examples from the Corpus
emphatic win/victory/defeat• It was an emphatic win and a remarkable turnaround in his fortunes.• Cardiff recorded two emphatic victories in 24 hours, winning 9-2 against Whitley Warriors and 13-2 at Billingham.• But Warrington achieved an emphatic win over Widnes with a highly disciplined performance. 