My team:

Pikachu (Basic, Electric type)
Magnemite (Basic, Electric type)
Blastoise (Final, Water type)

The battle! Round One!

Staryu (Basic, Water type) vs Pikachu (Basic, Electric type)
Pikachu is super effective Pikachu wins.

Round Two!

Psyduck (Basic, Water type) vs Magnemite (Basic, Electric type)
Magnimite is super effective Magnemite wins.

Round Three!

Starmie (Final, Water/Psychic type) vs Blastoise (Final, Water type)
outcome: A Draw

Final outcome: 2 wins & a draw