Foster was a reliable presence for the Switchbacks during his first professional season in 2022, earning 16 starts across 25 appearances and logging over 1,500 minutes. He recorded 32 clearances, won 30 of 39 tackles, and maintained a passing accuracy of 77.9%.
In the 2023 and 2024 seasons, Foster continued as a key starter for MLS NEXT Pro’s FC Cincinnati II, making 39 appearances. He made his MLS debut on June 29, 2024, against FC Dallas and scored his first goal for the team in the 2024 Concacaf Champions Cup against Cavalier FC.
