Avishka Fernando and Kusal Mendis hit centuries as Sri Lank thrashed the West Indies by 161 runs in the second one-day international to clinch the series on Wednesday.
The tourists, already 1-0 up in this three-match series, were 227-4 at tea on the fourth day, needing just 43 more runs to make England bat again in Manchester.
The International Cricket Council had earlier announced that India will remain the hosts of the 2021 tournament while the postponed 2020 tournament which was to be held in Australia will now take place in 2023. Identifying backup venues is standard practice for any tournament.
The world governing body of the sport, the International cricket Council (ICC) said it had also looked into the recent allegations and found no reason to doubt the integrity of the 2011 final, won by India.
Sri Lanka started the tournament as rank outsiders and finished sixth of the nine teams, registering one of their three wins against the world's top-ranked one-day international side and hosts England.
Broad ended the series when he had Jermaine Blackwood caught behind as the West Indies, set a huge target of 399 for victory, collapsed to a meagre 129 all out in under 38 overs.
The circumstances will be surreal with the COVID-19 pandemic meaning no fans will be present in the bio-secure environment — the only sounds being the thump of leather on willow, the chit-chat between the players and some piped-in crowd effects.