Instant reaction from the Avalanche’s 5-1 win over the Winnipeg Jets in Game 4 of their first-round Stanley Cup Playoffs series. Goin’ crazy for Casey: The hole left behind by Nazem Kadri has officially been filled, and his name is Casey Mittelstadt. Acquired from the Buffalo Sabres just before the trade deadline in March, the second-line center has been nothing short of spectacular working alongside Zach Parise and Artturi Lehkonen in these playoffs.