Stat of the Day: Iga Swiatek has now won 21 matches (and 28 sets) in a row

The Iga Swiatek winning streak just kept growing in Stuttgart on Friday, as she held off a stern challenge from reigning US Open champion Emma Raducanu in the quarterfinals of the WTA 500 clay-court event, 6-4, 6-4, for her 21st win in a row.

The 20-year-old Polish trailblazer's winning streak began with three straight WTA 1000 title runs in Doha (5-0), Indian Wells (6-0) and Miami (6-0), and has continued over the last week at Billie Jean King Cup (2-0) and Stuttgart (2-0 so far).

She’s also won her last 28 sets in a row, a stretch that dates back to her 4-6, 6-2, 6-3 fourth-round victory over Angelique Kerber at Indian Wells. It’s the longest set winning streak since Serena Williams also won 28 sets in a row between the final of the 2012 US Open and the quarterfinals of the 2013 Australian Open.

Up next for Swiatek in the semifinals of Stuttgart will be Liudmila Samsonova.

SWIATEK’S WINNING STREAK SINCE DOHA: 21-0

d. Golubic in Doha 2nd Rd, 6-2, 3-6, 6-2

d. Kasatkina in Doha 3rd Rd, 6-3, 6-0
d. Sabalenka in Doha QFs, 6-2, 6-3
d. Sakkari in Doha SFs, 6-4, 6-3
d. Kontaveit in Doha F, 6-2, 6-0
d. Kalinina in Indian Wells 2nd Rd, 5-7, 6-0, 6-1
d. Tauson in Indian Wells 3rd Rd, 6-7 (3), 6-2, 6-1
d. Kerber in Indian Wells 4th Rd, 4-6, 6-2, 6-3
d. Keys in Indian Wells QFs, 6-1, 6-0
d. Halep in Indian Wells SFs, 7-6 (6), 6-4
d. Sakkari in Indian Wells F, 6-4, 6-1
d. Golubic in Miami 2nd Rd, 6-2, 6-0
d. Brengle in Miami 3rd Rd, 6-0, 6-3
d. Gauff in Miami 4th Rd, 6-3, 6-1
d. Kvitova in Miami QFs, 6-3, 6-3
d. Pegula in Miami SFs, 6-2, 7-5
d. Osaka in Miami F, 6-4, 6-0
d. Buzarnescu in BJK Cup, 6-1, 6-0
d. Prisacariu in BJK Cup, 6-0, 6-0
d. Lys in Stuttgart 2nd Rd, 6-1, 6-1
d. Raducanu in Stuttgart QFs, 6-4, 6-4

Swiatek’s last loss came to Jelena Ostapenko in the second round of Dubai, and she barely lost that one, falling in a third set tie-break, 4-6, 6-1, 7-6 (4).