This selection lists all the Pokémon battles against the player's rival, Blue, in Yellow from start to finish. In Yellow, Blue will start with an Eevee. In later battles, Blue's Eevee will change depending on the outcomes of the first and second battles: * If the player wins both battles, it evolves into Jolteon. * If the player wins the first battle but loses or skips the second battle, or loses the first battle but wins the second battle, it evolves into Flareon. * If the player loses both battles, or loses the first battle and skips the second one, it evolves into Vaporeon.