the better of (someone or something)
Superiority, mastery, or an advantage over someone or something; control over someone or something. I know we could have beaten them in last week's game, but they just got the better of us from the get-go. I knew I shouldn't be meddling in other people's business, but my curiosity got the better of me.
*better of someone
and *the best of someonetriumph over someone. (*Typically: get ~; have ~.) Bill got the best of John in the boxing match. I tried to get the better of Tom in the golf match, but he won anyway.