be one up on (someone or something)
To have an advantage over someone or something. I think I'm one up on the other candidates for this position, thanks to my extensive student teaching experience.
get one up on (someone or something)
To attain an advantage over someone or something. I'm trying to get one up on the competition by praciticing in real-world conditions.
have one up on (someone or something)
To have an advantage over someone or something. I hope I have one up on the competition with my extensive student teaching experience.