Coventry City supporters will face League One trips to Bristol City, Wolverhampton Wanderers and Peterborough United after the final set of matches in the Championship were completed.
Bristoi City, who had been relegated for a while were beaten 4-1 at Charlton, whilst Wolves who needed a win and results to go their way, lost 2-0 at Brighton, who booked their place in the Play-Offs.
Former Coventry City manager Mark Robins saw his Huddersfield Town side escape being relegated after a 2-2 home draw against Barnsley who also avoided relegation thanks to Peterborough United losing 3-2 at Crystal Palace.
Leicester City will join Palace in the Play-Offs after a 3-2 win at Nottingham Forest and Bolton only drawing 2-2 with Blackpool.
Watford missed out on automatic promotion after a 2-1 home defeat to Leeds United and will now take the final play-off place whilst Hull City go into the Premier League after a 2-2 with Cardiff City who have already been crowned champions.
Elsewhere, Derby County beat Millwall 1-0 Birmingham drew 1-1 with Blackburn, Burnley beat Ipswich 2-0 and Sheffield Wenesday beat Middlesbrough 2-0,