Phoenix police said 23-year-old Nathan DeWitt, originally from Mount Vernon, died early Wednesday after being taken to a hospital.
Police and Phoenix Fire Department crews responded to a rollover crash shortly after midnight and found an SUV on its side.
They said DeWitt crawled out of the vehicle and had been shot.
Police said it's still unclear if DeWitt died from the shooting wound, injuries from the crash or both.
Detectives said DeWitt possibly was at Christmas party before the shooting.
The Arizona Republic reported Thursday that DeWitt was the 2005 Pacific Northwest yo-yo champion and placed eighth in the 2008 competition and 18th last year.
More Northwest Headlines
With protest over, Shell prepares for Arctic Ocean drilling Lawsuit over lease for Shell Arctic drilling fleet rejected Higher wages a surprising success for Seattle restaurant Court denies Medina millionaire’s release from Montana jail Prosecutors charge man in fatal Bonney Lake crash Woman, 87, goes missing while picking berries in Skamania County New wildfire burns at least 8 structures in Mason County Judge tosses lawsuit seeking Kurt Cobain death-scene photos
Our new comment system is not supported in IE 7. Please upgrade your browser here.