Swiatek reaches Cincinnati semis as Rybakina retires injured

Iga Świątek advanced to the Cincinnati Open semi-finals after Elena Rybakina retired injured in the first set, with the score 4-1 in Świątek's favour. Rybakina's withdrawal raises concerns about her fitness ahead of the US Open, where she is seeded second. Świątek will next face Jessica Pegula.