Washington Mystics forward Elena Delle Donne, a two-time WNBA Most Valuable Player, has entered the league's medical evaluation protocol and did not travel with the team to Bradenton, Florida, where the entire season will be held.
Delle Donne, 30, has Lyme Disease and a compromised immune system. Also being evaluated is center Tina Charles, who was acquired by the team from the New York Liberty in April.
"An update on their status will be given when their evaluations are finalized," the team said in a statement.
On Twitter, Delle Donne said she was "missing my teammates, but health and safety are the priority."
Delle Donne, a six-time All-Star, led the Mystics to the WNBA championship last season, beating the Connecticut Sun in five games. It was the franchise's first WNBA title.
The WNBA will hold its 2020 season at the IMG Academy in Florida, with teams playing 22 games. Teams have begun arriving at the venue, where they will stay for the duration of the season.
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