Portland Thorns defender Kat Tarr will miss four to six weeks after undergoing surgery on Wednesday to repair a torn meniscus in her left knee.
The 2005 Columbia River High School graduate is expected to immediately begin rehabilitation. The team did not release details about how the injury occurred.
Tarr has played in six games and made five consecutive starts at left back in her first season with the Thorns. In Portland’s most recent match on May 28 at Boston, Tarr received a red card in the 42nd minute for a foul that denied a Boston scoring opportunity.
After four seasons playing in Germany’s top women’s league, Tarr returned to Vancouver in the fall after the birth of her first child. She signed with the Thorns after a preseason tryout.
The Thorns host Western New York at 7 p.m. Saturday. United States women’s national team forward Alex Morgan is expected to make her 2014 debut for Portland.
