Dion Phaneuf sends a strong warning to former teammate Phil Kessel.

Phaneuf gives Kessel a warning before their playoff battle.

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There are a ton of story lines as we head into the Stanley Cup Championship Conference Finals, but one of the more interesting ones involves two former teammates, and two friends.

 Ottawa Senators defenseman Dion Phaneuf and Pittsburgh Penguins forward Phil Kessel were former teammates when they played together as members of the Toronto Maple Leafs, but on Saturday they will go to war in the Eastern Conference Final.

When he was asked about what it would be like to play against Kessel in the Conference Final, and while Phaneuf was gracious in his response, he also made it clear that there would be no friends out there on the ice.

Here's Phaneuf's comments from the man himself: