Smith, who recorded his fourth shutout of the season, made several acrobatic saves, including one in the shootout. Smith has 21 career NHL shutouts.
Niemi was nearly as flawless, stopping 21 shots before the shootout to earn his first shutout of the season and 20th in the NHL.
The Sharks entered the game with one power-play goal in their previous 21 opportunities, and went 0-for-4. Phoenix came with four goals in 23 chances before an 0-for-3 performance.