 After the 2012 outdoor season, Donatelli returned to the indoor game where he signed with the Baltimore Blast of the Major Indoor Soccer League.He would helped them win the 2012/13 MISL title and over the next three years, Donatelli played both indoor and outdoor soccer, before focusing solely on the indoor game starting in the 2015/16 campaign.During his time with the Blast, he helped them win three straight Major Arena Soccer League championships from 2015 - 2018.