My prediction -- he'll choked on the 18th hole and it will end up looking like this:

Tiger woods after taking Steroids reacts to a little boy who asked for his autograph.
Jim Furyk before taking steroids. An easy going smile. A nice man without a care in the world.
Jim Furyk after taking steroids. Notice the hate and anger as he charges into the gallary to punch a photographer for snapping a shot in the middle of his backswing. An obvious response from someone who cannot control himself due to the extended use of steroids.
Phil Mickelson after steroids. Notice the extra bulk. That came from somewhere!!!
Vijay Singh before Steroids. A nice manner, in control of his emotions. Smiling and laughing with the gallery.
Vijay Singh After Steroids. Unable to control his emotions due to excessive use of performace enhancing drugs, Vijay finally breaks down.
Adam Scott in a photo montage of his swing, prior to steroid use.
Adam Scott bulked up on steroids.