Seahawks wide receiver Percy Harvin injured his hip during a workout last week and surgery has not been ruled out, coach Pete Carroll told reporters Thursday.
Harvin has a possible slight tear in the labrum of his hip and will get a second opinion early next week, a source familiar with Harvin's condition told NFL.com.
Seattle gave up multiple draft picks earlier this year to get Harvin from the Minnesota Vikings. The 25-year-old was a first round draft pick in 2009 from the University of Florida.
Harvin was kept out of part of last season because of an ankle injury, but was thought to be ready for the season, which started Thursday with training camp.
The Seahawks, who odds makers and analysts list as SuperBowl contenders, start the preseason August 8 against San Diego.