Starting in 2024, MLB focused testing on a challenge system in which the human umpire makes each original call. Data from the spring training test could cause MLB to make alterations to the system ...

The 2021 U.S. Open champion had approached the chair umpire early in her second-round match against 14th-seeded Karolina Muchova on Tuesday night. She was in tears, and the WTA later linked her ...