Ella Seidel

Ella Seidel is a German right-hander out of Hamburg, born February 2005, who built her career through the qualifying draw rather than the wildcard fast lane. She turned pro in 2021 at age 15 and is noted for an aggressive baseline game. She attended the Sportgymnasium Alter Teichweg, graduating high school two years early at 17 to focus on tennis, and spent time training in Kühlungsborn, a Baltic Sea resort town where her parents owned a holiday home. Her WTA introduction came in doubles at 2022 Hamburg alongside Nastasja Schunk, before a 2023 singles main-draw debut as a wildcard that ended against fellow German Jule Niemeier.

At 5-foot-9 she's built around hard-court ball-striking, and the serve carries the profile: she wins roughly 66% behind her first serve and holds about 66% of her service games. The vulnerability is the return — she breaks only about a third of opponents' service games — and the double fault count runs high at nearly one every other game. It's a game that scores on her own delivery and grinds on margins elsewhere, the kind that rewards her on quick courts and strains on slow clay.

The climb has been a string of qualifying runs converted into ranking points. At the 2025 Korea Open she qualified and reached the quarterfinals, beating defending champion Beatriz Haddad Maia in the third-longest match of the year, coming from 5-2 down in the third. Her signature week, though, was the Cincinnati Open: she recorded her first WTA 1000 win over Polina Kudermetova, then beat eighth seed Emma Navarro for her first top-20 win and McCartney Kessler to make a maiden 1000 fourth round, falling to qualifier Varvara Gracheva.

Her career-high of No. 78 came in January 2026, after she first cracked the top 100 in September 2025. She opens this season ranked just inside the top 100, the clay swing — never her surface — the next test before the grass and hard courts where her serve travels best.