Serena Williams’ coach says her first singles match in nearly four years at Wimbledon involved factors such as nerves and conditions inside the stadium. Rennae Stubbs, one of Williams’ coaches, describes a moment during the match when Williams appears to relax as play goes on. Stubbs told The Associated Press she noticed Williams take a “deep breath” about an hour into the second set and interpreted it as her settling down. Stubbs also links the loss to match conditions, including that the roof was closed, which can affect atmosphere and play. The comments come after Williams, 44, was beaten earlier this week by an opponent less than half her age. Across the reporting, the focus is on Williams’ adjustment period—nerves and environmental factors early in the match—and how those elements may have influenced her ability to find rhythm. The coach’s remarks provide context for Williams’ performance during her return to singles at Wimbledon, without disputing the outcome of the match.