Karolina Muchova wins Bad Homburg after Naomi Osaka retires injured

Fourth seed Karolina Muchova won the Wimbledon warm-up tournament at Bad Homburg, Germany, on Saturday after Naomi Osaka withdrew with an ankle injury. In the first grass court final of her career, the four-time Grand Slam winner Osaka was troubled by the injury and lost the opening set 6-1, having taken a short break for