Korpikoski and defenseman Keith Yandle both had a goal and an assist, Taylor Pyatt had two assists, and Mike Smith made 29 saves for Phoenix to improve to 4-0-1 against Anaheim.
Ryan Getzlaf scored his first two goals of the season for the Ducks, who have dropped two in a row at home after a four-game winning streak. Lubomir Visnovsky had a goal and an assist, and Kurtis Foster also scored for Anaheim.
The Coyotes, coming off back-to-back home losses to Chicago and Los Angeles, scored on five of 19 shots against Jonas Hiller and chased him at 7:56 of the second with Phoenix leading
Korpikoski scored on a short wrist shot after defenseman Adrian Aucoin intercepted an attempted clearing pass and got the puck to Pyatt. Another turnover led to Yandle’s goal.
Hiller was then replaced by Dan Ellis, and the Ducks responded by narrowing the gap to 5-3 on Foster’s first goal since being acquired this summer.
Getzlaf scored his second goal with 1:08 to play.