Round One!

Pidgeotto (Middle, Normal/Flying type) vs Pidgeotto (Middle, Normal/Flying type)
Draw.

Round Two!

Sandshrew (Basic, Ground type) vs Bulbasaur (Basic, Poison/Grass)
Bulbasaur wins due to type advantage.

Round Three!

Metapod (Middle, Bug type) vs Charmeleon (Middle, Fire type)
Charmeleon wins due to type advantage.

Final outcome: 2/3 wins, Victory.