Celtic and Rangers?
They're the obvious two.
The Scottish Premier League started in 1998 when it separated from the Scottish Football League. The two clubs rejoined in 2013 to form the Scottish Professional Football League.
Because they are two of the three most successful clubs in Scotland, along with Celtic.
Scottish Junior Football Central Division Two was created in 2002.
Scottish Junior Football North Division Two was created in 2003.
Celtic Football Club and Rangers Football Club are generally considered to be the two biggest football clubs in Scotland. . Rangers Football Club is based in the Ibrox district of Glasgow, and Celtic Football Club is based in the Parkhead area of Glasgow.
The football/soccer league known as the Scottish Premier League was founded in 1998. At its inception, the league had 10 clubs, but has expanded to have 12 currently. As of 2013, only two teams have won championships: Celtic and Rangers.
Watford and Stevenage Borough.
Bobby Moore played for two English clubs, West Ham and Fulham, and two American clubs, San Antonio Thunder and Seattle Sounders.
There are two football clubs in Manchester; Manchester United and Manchester City.
Notts County and Nottingham Forest
Fernando Torres
Ac Milan and Inter Milan/ Juventus