Maple Leafs captain Dion Phaneuf, one of MacArthur's teammates at the 2005 World Junior Championships, was influential in the decision to sign with Toronto. MacArthur scored goals in each of his first four games with the club, becoming the first player in team history to do so.
The passage highlights the connection between Dion Phaneuf, a former teammate of MacArthur at the World Junior Championships, and MacArthur's decision to join the Toronto Maple Leafs. It also emphasizes MacArthur's impressive start with the team, becoming the first player in franchise history to score goals in his first four games.