Serena Williams Serena Williams received emergency treatment for a blood clot in her longs on Monday at a Los Angeles hospital, then returned to her home in the city.

Nicole Chabot, a spokeswoman for Williams, said that the tennis star “underwent emergency treatment for a hematoma suffered as a result of treatment for a more critical situation.”

This latest medical scare comes roughly a week after Williams suffered a pulmonary embolism, which was discovered while she was in Los Angeles.

Her agents confirmed Wednesday that Williams was diagnosed with a pulmonary embolism last week and later needed treatment for a hematoma. The 13-time Grand Slam champion hasn’t played an official match since winning Wimbledon last July because of a foot injury she sustained not on the court but at a restaurant.

Her latest health problems have been “extremely hard, scary and disappointing,” Williams said in a statement. “I am doing better. I’m at home now and working with my doctors to keep everything under control. I know I will be OK, but am praying and hoping this will all be behind me soon.”

“Thankfully everything was caught in time,” her agents said in a statement. “With continued doctor visits to monitor her situation, she is recuperating at home under strict medical supervision.”