The reigning WNBA MVP could miss the whole 2019 season.

Reigning WNBA MVP and Seattle Storm forward Breanna Stewart suffered a torn Achilles while playing for Russian club Dynamo Kursk in the EuroLeague Final Four championship game on Sunday, the league announced Tuesday.

Stewart suffered the injury when she landed on the foot of fellow WNBA star Brittney Griner, who was playing for Russia's UMMC Ekaterinburg, after attempting a jump shot late in the second quarter.

Stewart, a two-time All-Star, helped lead the Seattle Storm to the WNBA title last season. She became the sixth player in league history to win both league MVP and Finals MVP in the same season.

Stewart, 24, is entering her fourth season in the WNBA.

Recovery from a torn Achilles tendon can typically range from six months to an entire year. The WNBA regular season starts on May 24.