A testimonial match or testimonial game, often referred to simply as a testimonial, is a practice in some sports, notably football

Football (soccer)

Association football, more commonly known as football or soccer, is a sport played between two teams of eleven players with a spherical ball...

 and especially in the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

, where a club puts on a match in honour of a player for service to the club.

By tradition, clubs typically grant testimonials to players upon reaching ten years of service with a club, although they sometimes are given to players with less service as they approach retirement.