A product of Arezzo's youth system, Calori made his professional debut in 1985 with Serie C team Montevarchi, where he spent four season.

In February 2009 he was unveiled as new head coach of Lega Pro Prima Divisione club Portosummaga, replacing Manuele Domenicali.

[8] On 12 December 2011, he was named new head coach of Serie B side Brescia, as a replacement for Giuseppe Scienza.

[9] He served as head coach of Trapani Calcio from 2016 to 2018, witnessing a relegation to Serie C and a failed promotion campaign the following season.

[11] While not being particularly elegant or skilful defender, Calori was a powerful and physically strong centre back, who was known for his tenacity and his hard-tackling playing style, as well as his leadership.