Rantanen had three goals and four assists in two games for the Avalanche, who increased their winning streak to four games.
He had two goals, including the game winner, and an assist in a 5-3 win over Nashville on Thursday. He added a goal and three assists in a 4-1 victory over Carolina on Saturday.
Rantanen has 14 points (seven goals, seven assists) over a five-game point streak.
Ullmark went 3-0-0 with a 1.34 goals-against average and .956 save percentage to guide the league-leading Bruins (14-2-0, 28 points) to a 4-0-0 week.
He had 29 saves in a 5-2 win versus Vancouver on Saturday as Boston set a franchise record with nine straight home wins to open a season.
Fox led the NHL with six assists and eight points over four games. He scored the winning goal in both of the Rangers' victories last week.
This report by The Canadian Press was first published Nov. 14, 2022.
The Canadian Press