"Alright everyone! You have five minutes before the next match. Be prepared!" Hibiki said. Iggy finished scarfing down his mountain of food before hopping up. "ALRIGHT!" He shouted happily. "Now! Gonna go stretch a bit." He said energetically. And with that he was out the door. 

(Alright. So I think Iggy would win. 
I mean logically he hasn't been hurt, has energy. Lily can put up a big fight. Yuuki can do a bit, but Iggy is definitely stronger than her. Battle skill wise not magic wise. But Lily is at a disadvantage in energy and she uses plants. What do you think?)