Huddersfield and not Stoke would have been relegated from the Premier League last season had luck not been a factor, new research has revealed.

The Terriers finished four points ahead of Stoke in the table, but when incorrect refereeing decisions are taken into account their first season back in the top flight for 45 years would not have had a fairytale ending.

According to the ESPN Luck Index, Stoke lost out on four points due to incidents such as incorrectly disallowed goals, wrongly-awarded penalties and improper red card decisions, while Huddersfield gained two points.

Only five teams would maintain their position in the final 2017/18 Premier League table when it is adjusted based on the ESPN Luck Index
Only five teams would maintain their position in the final 2017/18 Premier League table when it is adjusted based on the ESPN Luck Index (PA Graphics)

The Index, a research project designed and carried out by ESPN, Intel and experts at the University of Bath, also found that Manchester United were the luckiest Premier League team last season and Liverpool the unluckiest.

Using a predictive model which crunched hundreds of data points and working in collaboration with former Premier League referee Peter Walton, a research team analysed footage from every game of the season to see which major incidents should have been overturned.

Manchester United would have finished fourth not second in the table having gained six points due to wrong decisions, according to the Luck Index, with the runners-up spot going to Liverpool, who missed out on 12 points.

Stoke would not have been relegated but for incorrect decisions, according to the ESPN Luck Index
Stoke would not have been relegated but for incorrect decisions, according to the ESPN Luck Index (Dave Thompson/PA)

Brighton would have won an additional £11.5million in prizemoney in their first season in the Premier League by finishing six places higher, while Leicester would have won £9.6m less.

The ESPN Luck Index demonstrates the considerable financial impact of favourable or unfavourable decisions, with prize money increasing by nearly £2m for each place in the table.

“The ESPN Luck Index powered by Intel analysed more than 150 incidents throughout the season, and used data ranging from recent form and team strength to game state and home advantage,” said University of Bath assistant professor Thomas Curran.

Manchester City would still be 2017/18 Premier League champions according to the ESPN Luck Index
Manchester City would still be 2017/18 Premier League champions according to the ESPN Luck Index (Anthony Devlin/PA)

“Then we simulated each game thousands of times to model how it should have turned out – it is one of the most detailed pieces of research we have ever conducted.”

Former referee Walton added: “The results of the ESPN Luck Index powered by Intel demonstrate the impact and importance of refereeing decisions on a game.

“With the Premier League deciding not to introduce VAR for the coming season, it is interesting to see how much luck plays a part in the way the league unfolds.”