UNIONDALE, N.Y. >> Islanders captain John Tavares scored 15 seconds into overtime to lift New York to a 2-1 win in Game 3 of their first-round playoff series over the Washington Capitals on Sunday.Kyle Okposo also scored for the Islanders, who took a 2-1 series lead.The game was decided quickly in the extra period, and after the Islanders allowed the Capitals to tie the game on Nicklas Backstrom's goal with 6:06 remaining in the third.