Shattenkirk's right-handed shot and instincts working with forward Nicklas Backstrom has made the first power-play unit even more diverse, leaving opponents to choose whether to key on Alex Ovechkin in the left circle, Shattenkirk at the point, Backstrom on the right half wall or T.J. Oshie and Marcus Johansson down low.
Since joining the Capitals, Shattenkirk has 14 points (two goals, 12 assists) in 20 games, including seven points (one goal, six assists) on the power play.
"Their power play was giving a lot of teams a lot of headaches before," New York Rangers coach Alain Vigneault said. "Obviously, [Shattenkirk's] right-handed shot helps a lot. He's an elite player that can find open people and is real good on the power play."
The Capitals power play was 13-for-50 (26 percent) in the playoffs last season, but that included going 5-for-9 in a 6-1 victory against the Philadelphia Flyers in Game 3 of the Eastern Conference First Round and 8-for-27 (29.6 percent) in that series overall. In their six-game loss to the Pittsburgh Penguins in the second round, they went 5-for-23 (21.7 percent), including 1-for-12 in the first four games, when they fell in a 3-1 series hole.
In the playoffs, the importance of each power play becomes magnified as an opportunity to change the momentum in a game or even the series.
"Especially in the playoffs, those are turning points in the game," Shattenkirk said. "Maybe you catch a break and get a power play and need to turn things around, and you may not score but you get the crowd back into it or you take it away from the other team in the opposing building."