Middlesbrough Football Club is a professional association football club based in Middlesbrough, North Yorkshire, England. They are currently competing in the EFL Championship, the second tier of English football. Formed in 1876, they have played at the Riverside Stadium since 1995, their third ground since turning professional in 1889. They played at the Linthorpe Road ground from 1882 to 1903 and at Ayresome Park for 92 years, from 1903 to 1995.
They were one of the founding members of the Premier League in 1992 and became one of the first clubs to be relegated from it following the 1992/93 season. The club came close to folding in 1986 after experiencing severe financial difficulties before it was saved by a consortium led by then board member and later chairman Steve Gibson. The club's main rivals are Sunderland and Newcastle United. There is also a rivalry with fellow Yorkshire club Leeds United.
Middlesbrough won the League Cup in 2004, the club's first and only major trophy. They reached the 2006 UEFA Cup Final, but were beaten by Spanish side Sevilla.