give someone/something a run for their money

US /ɡɪv ˈsʌm.wʌn ˈsʌm.θɪŋ ə rʌn fɔr ðɛr ˈmʌn.i/
UK /ɡɪv ˈsʌm.wʌn ˈsʌm.θɪŋ ə rʌn fɔr ðɛr ˈmʌn.i/
"give someone/something a run for their money" picture
1.

darle una buena pelea, competir fuertemente

to compete very well against someone or something, making them work hard to win

:
The underdog team really gave the champions a run for their money in the final match.
El equipo desvalido realmente le dio a los campeones una buena pelea en el partido final.
Our new product is designed to give the market leader a run for their money.
Nuestro nuevo producto está diseñado para darle al líder del mercado una buena competencia.