punch above your weight
US /pʌntʃ əˈbʌv jʊər weɪt/
UK /pʌntʃ əˈbʌv jʊər weɪt/

1.
superar as expectativas, ir além do esperado
to perform or compete at a level that is higher than one's apparent capabilities or resources
:
•
Despite being a small company, they managed to punch above their weight and win the big contract.
Apesar de ser uma empresa pequena, eles conseguiram superar suas expectativas e ganhar o grande contrato.
•
The new player is really punching above his weight, scoring goals against top defenders.
O novo jogador está realmente superando suas expectativas, marcando gols contra os melhores defensores.