Both Cardiff City and Swansea City are celebrating their success after making it into the Championship play-offs for promotion to the Premiership.
The two Welsh sides found form at the right time with Cardiff beating Hull 3 - 0 to finish fifth. Meanwhile, Swansea scored four goals to beat Reading 4-1, placing them sixth.
Cardiff City manager Neil Harris hailed the Bluebirds "huge achievement" of making the Sky Bet Championship play-offs and hopes momentum will carry his team forward after sending Hull down.
Junior Hoilett, Sean Morrison and Danny Ward were on target as Cardiff's comfortable 3-0 win saw them secure fifth place and drop Hull into the third tier of English football for the first time in 15 years.
"It's a huge achievement," said Cardiff boss Harris, who succeeded Neil Warnock in November when Cardiff were 14th in the table.
"Every bit of praise for the players and the staff has been earned.
"I came in as not a huge name and I had to prove myself, every week.
"The play-off (semi-finals) are about four halves of football and you need momentum."
Cardiff are the form team in the play-offs having finished with wins over Derby, Middlesbrough and Hull.
Cardiff City will now play fourth-placed Fulham in the play-offs, with the first leg being staged in Cardiff on Monday 27 July.
Swansea snatched the final play-off place from Nottingham Forest, joining rivals Cardiff in the top six and they will play Brentford on Sunday 26 July.