Frederic Cassivi looked extremely confident in goal last night as he helped the Capitals maintain dignity through a three to zero loss at Toronto that could have been much worse. Cassivi preserved a scoreless tie with solid, calm, positional goaltending through twenty-three minutes of play in spite of receiving a dirty slash to the back of his helmet from notorious goon Darcy Tucker, who was immediately knocked to the ice by stalwart Caps defenseman John…