Early career Calandrelli made his professional MMA debut in 2004. He amassed a record of 4–3 before signing with
Bellator.
Bellator MMA Calandrelli made his Bellator debut at
Bellator 48 on August 20, 2011. He faced Matt Nice and won via keylock submission in the first round. Calandrelli next faced Eric Brown at
Bellator 81 on November 16, 2012. He won via armbar submission in the second round. Over a year away from the cage, Calandrelli eventually returned and faced
American Top Team fighter
Ryan Quinn in a fight that was originally expected to take place at
Bellator 98, but was cancelled prior to the fight due to a medical issue. He lost the fight via unanimous decision. ==Mixed martial arts record==