Spezza announced his retirement Sunday after playing 19 seasons with Ottawa, Dallas, and Toronto.
Spezza skated on the fourth line at practice Friday and could be entering the lineup in place of Wayne Simmonds for Game 3, reports Mark Masters of TSN.
Spezza has been a healthy scratch four times in the Leafs' last seven games.
Spezza notched an assist in Monday's 5-4 win over the Blue Jackets.
Spezza recorded an assist and two PIM in Monday's 5-2 loss to the Canadiens.
Spezza scored a goal and added two PIM in Monday's 6-4 win over the Devils.
Spezza notched an assist in Saturday's 7-4 win over the Red Wings.
Spezza notched an assist and three shots on goal in Saturday's 6-0 win over the Senators.
Spezza cleared COVID-19 protocol and practiced Monday, David Alter of The Hockey News reports.
Spezza entered the NHL's COVID-19 protocols on Friday.