At the Grass Field, Ash starts his next match with Jeanette Fisher from Crimson City. He sends out Bulbasaur, and Jeanette uses Beedrill. The Bug-type Pokémon is about to hit Bulbasaur with Tackle, but Bulbasaur dodges it. Bulbasaur uses Razor Leaf, but Beedrill evades it and uses Twineedle, followed by Poison Sting. Bulbasaur dodges the attacks again before using Leech Seed, which instantly drains Beedrill’s energy, allowing Bulbasaur to finish it off with Tackle. Jeanette then sends out her next Pokémon, Scyther. Bulbasaur keeps dodging Scyther’s attacks, but Scyther uses Double Team to gain the advantage. Scyther gets in a few hits before Ash gets the idea to use Vine Whip on all the duplicates, so Bulbasaur will eventually hit the real one. The plan works, and Scyther is knocked out.
(Source: Bulbapedia)