[3] Prior to the draft Zadina was considered a top prospect, with NHL Central Scouting Bureau describing him as a natural scorer with a great finishing touch.

[4] He was the third ranked North American based skater, before he was selected sixth overall in the 2018 NHL Entry Draft by the Detroit Red Wings on 22 June 2018.

[6] After attending Red Wings training camp prior to the 2018–19 season, Zadina was reassigned to the Grand Rapids Griffins in the American Hockey League on 30 September.

[17] On 2 September 2024, having left the Sharks after a lone season, Zadina signed as a free agent to a two-year contract with Swiss club, HC Davos of the NL.

[18] Filip is the son of Marek Zadina [cs], a retired professional ice hockey player who is currently an assistant coach for HC Oceláři Třinec of the Czech Extraliga.