• Maccelli was named to the USHL Second All-Star Team in 2018-19 after ranking third in the league with 31-41—72 for the Dubuque Fighting Saints. It marked a 51-point increase from his 2017-18 rookie campaign when he notched 8-13—21 in 36 appearances.

• A native of Turku, Finland, Maccelli grew up playing hockey in the TPS system where he skated alongside No. 1-ranked International Skater Kaapo Kakko on the junior team in 2017-18.

• Maccelli represented his country at the 2017 Ivan Hlinka Memorial (1-1—2 in 4 GP).

• Models his style of play after Flames forward Johnny Gaudreau.