On vault with little fault, Ava Sullivan becomes first state champ in Oswego co-op program history. ‘My goodness.’

On vault with little fault, Ava Sullivan becomes first state champ in Oswego co-op program history. ‘My goodness.’

Oswego co-op senior gymnast Ava Sullivan stuck the landing on her layout Yurchenko vault and raised an arm in triumph before turning and hugging coach Michael Borge. Sullivan knew she had just done something great, even though she didn’t realize exactly how great or how unique it was. “My dad always tells me when I do any dismount just stick it like a lawn dart — like throw it into the ground,” Sullivan said. “That’s what this was, so I was like…