[2] Previously forming a pair with compatriot Kira Walkenhorst, she represents Hamburger SV and has won four European championships.

[3] They continued their line of success in 2007, defending the German title and winning the silver medal in the European Championships in Valencia.

[4] Ludwig and Walkenhorst won the gold medal at the 2016 Summer Olympics, defeating Brazil's pair of Ágatha and Bárbara in straight sets of 21-18 21–14 in the final.

Alongside regular partner Walkenhorst, they secured the gold medal with a 2:0 scoreline ahead of runners-up Laboureur & Sude.

[11] In July, Ludwig partnered with Margareta Kozuch to represent Germany at the 2020 Summer Olympics in Tokyo that had been delayed due to the worldwide COVID-19 pandemic.