A breakdown of the withdrawals, retirements, and medical timeouts happening in the 13th week of the 2017 WTA season.
WTA Staff

Volvo Car Open

Pre-Tournament Withdrawals

Ana Konjuh (back)
Yaroslava Shvedova (right ankle)
Natalia Vikhlyantseva (left shoulder)
Vania King (left ankle)
Alisa Kleybanova (left foot)
Peng Shuai (low back)
Hayley Carter (left leg)
Johanna Konta (right shoulder)

Retirements

Katerina Siniakova (left lower back) - 1R vs. Monica Puig, 4-6, 6-2, 4-1

Louisa Chirico (left mid-back) - 1R vs. Annika Beck, 6-0, 3-0

Fanny Stollar (left thigh) - 3R vs. Jelena Ostapenko, 6-1, 1-0

Medical Timeouts

Alison Riske (right eye irritation) - 1R, d. Kayla Day, 7-5, 4-6, 6-0

Marina Erankovic (neck) - 1R, l. Ons Jabeur, 6-4, 6-1

Lesia Tsurenko (left thigh) - 1R, l. Laura Siegemund, 6-7(8), 6-2, 7-6(4)

Yulia Putintseva (viral illness) - 1R, l. Magda Linette, 4-6, 6-2, 6-4

Fanny Stollar (leg cramping) - 1R, d. Asia Muhammad, 6-3, 7-5

Laura Siegemund (right knee abrasion) - 2R, d. Venus Williams, 6-4, 6-7(3), 7-5

Andrea Petkovic (left knee) - 2R, l. Anastasija Sevastova, 6-3, 6-4

Kateryna Bondarenko (right lower back) - 2R, l. Kiki Bertens, 6-2, 7-5

Laura Siegemund (right thigh/hamstring) - SF, l. Daria Kasatkina, 3-6, 6-2, 6-1

Mirjana Lucic-Baroni (right knee) - SF, l. Jelena Ostapenko, 6-3, 5-7, 6-4

Katerina Siniakova (left thigh) - doubles final w/ Hradecka, l. Mattek-Sands/Safarova, 6-1, 4-6, 10-7

Abierto GNP Seguros

Pre-Tournament Withdrawals

Monica Niculescu (left hand)

Risa Ozaki (left thigh)

Nicole Gibbs (right knee)

Medical Timeouts

Nina Stojanovic (right thigh) - 1R, l. Heather Watson, 6-2, 6-7(7), 6-4

Alison Van Uytvanck (left lower back) - 1R, l. Carla Suárez Navarro, 6-2, 6-4

Christina McHale (dizziness) - 1R, l. Tereza Martincova, 3-6, 7-5, 6-4

Tereza Martincova (left thigh) - 2R, l. Julia Boserup, 6-3, 4-6, 6-4

Anastasia Pavlyuchenkova (right thigh) - SF, d. Caroline Garcia, 6-2, 6-4

Anastasia Pavlyuchenkova (left thumb laceration) - F, d. Angelique Kerber, 6-4, 2-6, 6-1

Alicja Rosolska (left mid-back) - doubles F w/Hibino, d. Jakupovic/Kichenok, 6-2, 7-6(4)