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).