Erik Karlsson was not only the Senators' best defenseman during the regular season, but he had one of the most relatively productive seasons in the history of the NHL. So it was a disappointment when he played lousy in the Rangers' 4-2 Game 1 win on Thursday. But he rebounded slightly last night in Game 2, when he scored on a fluke goal on a power play, 13:50 in the second period in the Senators' 3-2 overtime victory. Karlsson's goal came when he was below the Rangers' goal line and flipped a puck to the front of the net that went in off of Michael Del Zotto's skate, tying the score 1-1.