Having never been in the playoffs before in his seven-season career, MacArthur suffered the indignity of being a healthy scratch in Games 2 and 3 of Toronto's best-of-7 Eastern Conference Quarterfinal series against the Boston Bruins, but now has goals in back-to-back games as the Maple Leafs won 2-1 Friday in Boston to remain alive.
Game 6 is Sunday in Toronto (7:30 p.m. ET, CBC, RDS).
"I just wanted to stay ready in practice," MacArthur said. "You never know when you're going to get the chance to play again. It was nice to get back in and help the team."