Saturday's blockbuster La Liga clash between Barcelona and Real Madrid will be preceded by a minute's silence for the 71 people killed in a plane crash that decimated the Brazilian soccer team Chapecoense
A minute's silence will also be held before all matches in the Copa del Rey across Spain on Wednesday and Thursday.
Madrid, Barca and Atletico Madrid were among a host of Spanish clubs to express shock and sadness at the plane crash in Colombia on Tuesday.
Former Atletico midfielder Cleber Santana was one of those killed as the plane went down just before reaching its destination in Medellin, where Chapecoense were to play in a Copa Sudamericana final.
Three Chapecoense players were among six survivors rescued from the wreckage.