Italy international defender Davide Astori died in his hotel room during the night of Saturday to Sunday.
The news has come as a shock to the world of football. Fiorentina were scheduled to play Udinese in Serie A on Sunday afternoon but the game was immediately called off.
Clubs and several players have backed the decision to postpone the remaining fixtures, with three matches having already taken place: SPAL-Bologna, Lazio-Juventus and Napoli-Roma.
In addition to the Fiorentina game, Sunday's match between Genoa and Cagliari, one of his former clubs, was called off just before its 1230 (1130 GMT) kickoff. When Astori's death was announced on the stadium video screen, many of the players warming up walked off the pitch in tears.
It was then officially confirmed that all other Serie A fixtures were called off. A date hasn't been set for the matches to be played.
Sconvolta dalla tragica notizia, tutta la famiglia della Lega Serie A si stringe attorno alla famiglia di Davide Astori e alla @acffiorentina.
— Serie A TIM (@SerieA_TIM) 4 de marzo de 2018
Tutte le gare in programma oggi sono rinviate in segno di lutto.
Ciao Davide. pic.twitter.com/KWa4P0dPHc