November in the Coachella Valley is sunny and hot, which is exactly why the conditions were supposed to suit the WTA Finals. The sun, though, has become the problem. Writing for The Athletic, and republished by Yahoo Tennis, the reporting describes the first four days of round-robin play at Indian Wells as a run of errors, shanks and uneven sets from the best eight players of 2026.
The reason is the calendar. The midday sun sits roughly 15 degrees lower than it did in March, and at solar noon a one-metre post now casts a shadow of about 123 centimetres instead of 73. That shifts sunlight across the stadium at new angles, and Aryna Sabalenka, who beat Karolína Muchová 7-6(2), 7-5 on Monday, said she sometimes had to adjust her toss and sometimes served blind. She hit seven double faults in that match.
Jessica Pegula, who beat Marta Kostyuk in straight sets on Tuesday after losing to Coco Gauff in three, said she had not expected the glare at a venue she visits every spring. Playing first in the day means working through shifting shadow lines during rallies, while the higher midday sun helps the serve.
Linda Nosková responded on the return rather than the serve. She stepped farther behind the baseline, which bought her time to read Gauff's second serve. She won 6-3, 6-3 in 75 minutes, broke Gauff five times and became the first player into the singles semifinals. Matt Miller-Dicks, a skill-acquisition researcher quoted in the piece, notes that strong players predict a shot from the opponent's movement rather than tracking the ball throughout, and direct glare interferes with the eye movements that make that possible. Moving back helps the returner but takes them away from the baseline when they want to dictate.
Pegula now meets Nosková on Thursday with a semifinal place still open. If the early match runs long, the light may matter less. If it starts quickly, both players will be fighting the sun as well as each other.
