Laura Siegemund Laura Natalie Siegemund (born 4 March 1988, in Filderstadt) is a German professional tennis player. She is a two-time Grand Slam champion, having won the 2020 US Open in women's doubles with Vera Zvonareva, as well as the 2016 US Open in mixed ...

was the defending champion, but lost in the second round to

CoCo Vandeweghe Colleen "CoCo" Vandeweghe ( ) (born Colleen Mullarkey; December 6, 1991) is an American professional tennis player. A former Junior US Open champion and top 10 singles player, she has also won two WTA titles, both at the Rosmalen Grass Court C ...

Karolína Plíšková Karolína Hrdličková ( née Plíšková; ; born 21 March 1992) is a Czech professional tennis player. She is a former world No. 1 in singles, reaching the top of the Women's Tennis Association (WTA) rankings on 17 July 2017 and holding the pos ...

won the title, defeating Vandeweghe in the final, 7–6^(7–2), 6–4. 15-year-old

Marta Kostyuk Marta Olehivna Kostyuk ( uk, Марта Олегівна Костюк; born 28 June 2002) is a Ukrainian tennis player. She has career-high rankings of 49 in singles, achieved on 14 February 2022, and world No. 39 in doubles, reached on 19 Septem ...

became the youngest player to win a main draw match in Stuttgart since

Martina Hingis Martina Hingis (, sk, Martina Hingisová; 30 September 1980) is a Swiss former professional tennis player. Hingis is the first Swiss player, male or female, to win a major title and attain a world No. 1 ranking. She spent a total of 209 weeks a ...

in October 1994.

Seeds

The top four

seeds A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosperm pl ...

received a bye into the second round.

Draw

Finals

Top half

Bottom half

Qualifying

Seeds

Qualifiers

Lucky loser

Draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

References

External links

Main draw

Qualifying draw
{{DEFAULTSORT:2018 Porsche Tennis Grand Prix - Singles Porsche Tennis Grand Prix Singles 2018 Women's Singles