Thornton had a league-best four goals and six assists in four games last week as the Sharks gained seven of a possible eight points (3-0-1).
Sakic had three goals and six assists in three games as the Avalanche moved within four points of eighth-place Calgary in the Western Conference playoff race last week.
It was a milestone week for Modano, who recorded four goals and two assists in four games. He scored his 500th career goal and became the all-time leading scoring among U.S.-born players during the week.