Naruto Episode 9: Kakashi: Sharingan Warrior!
Episode 9 of 220 of Naruto, aired November 28, 2002, 25 minutes. Available with English subtitles and dub where released.
Episode summary
With Kakashi free, the fight between him and Zabuza resumes. Kakashi decides to show Zabuza what the Sharingan is really capable of. Can Kakashi's Sharingan defeat Zabuza? And who is the mysterious person watching the fight?