Examples:

Despite being the underdog, our team gave the reigning champions a run for their money. The young tennis player gave the experienced opponent a run for their money in the final match. The new restaurant in town is giving established eateries a run for their money with its unique cuisine. The talented singer gave the established artists a run for their money during the singing competition. The startup company is giving the industry giants a run for their money with its innovative approach. The rookie basketball player is giving the seasoned veterans a run for their money with his impressive skills. The ambitious politician is giving the incumbent a run for their money in the upcoming election. The new employee is giving his coworkers a run for their money with his exceptional work ethic. The young author's debut novel is giving established writers a run for their money with its compelling storyline. The determined student is giving her classmates a run for their money with her consistently high grades. The up-and-coming artist is giving renowned painters a run for their money with his unique style. The small business owner is giving the corporate giants a run for their money with his personalized service. The young chess prodigy is giving experienced players a run for their money in the national tournament. The rookie pitcher is giving the seasoned batters a run for their money with his lightning-fast pitches. The talented actress is giving established stars a run for their money with her captivating performances. The startup tech company is giving established firms a run for their money with its groundbreaking inventions. The determined marathon runner is giving her competitors a run for their money with her exceptional speed. The young entrepreneur is giving established business owners a run for their money with his innovative ideas. The aspiring fashion designer is giving renowned designers a run for their money with her unique creations. The up-and-coming band is giving established musicians a run for their money with their catchy tunes. He’ll give those professional players a run for their money.

Having an infant and a toddler sure is giving me a run for my money.