Hull have sealed promotion to the Premier League after a thrilling final day of the Championship season which saw Watford agonisingly miss out.
The Tigers conceded an injury-time penalty in their 2-2 draw with champions Cardiff - moments after missing a spot kick themselves - which meant a victory for Watford over Leeds in their match at Vicarage Road, which still had around 15 minutes to play due to an earlier injury delay, would have sent the Hornets up.
With the scores level at 1-1, Gianfranco Zola's side threw everyone forward in search of a dramatic winner but instead conceded a goal on the counter attack in stoppage time as they lost 2-1 at Vicarage Road.
Hull are now 11/10 with Sky Bet to stay up next season and 4/6 to be relegated while third-placed Watford are now 3/1 third favourites to win the play-offs ahead of their two-legged semi-final with Leicester.
The Foxes, Sky Bet's 9/4 joint favourites with Brighton to go up, sneaked into the top six with a last-gasp 3-2 victory over fellow hopefuls Nottingham Forest, as Bolton dropped to seventh following their 2-2 draw at home to Blackpool.
The other semi-final sees Brighton face Crystal Palace, who are the outsiders of the four sides at 7/2 with Sky Bet.
Peterborough were also relegated and have been priced up at 8/1 to win League One next season behind Wolves (5/1) and Bristol City (11/2).
Sky Bet's Chris Spicer said: "The final day of the Championship more than lived up to its billing but all eyes will now be on the play-offs and we're expecting surprise contenders Leicester to take some momentum into it."