Darrius Heyward-Bey was not on the field for Oakland Raiders practice on Thursday, according to Vic Tafur of the San Francisco Chronicle. Heyward-Bey tweaked his hamstring during practice Wednesday, and does not yet appear to be healthy.
There is no word yet on Heyward-Bey's status for Sunday's game against the New Orleans Saints, though his prospects have to be considered cloudy at best. We will know more when he is given an injury designation on Friday's injury report.
Fantasy Impact: Heyward-Bey's injury is apparently significant if the Raiders are willing to hold the wide receiver out of practice altogether. Be sure to keep a sharp eye out for whatever morsels of information you can find between now and game-time. Unfortunately, the Raiders play in the second slate of games, meaning most of your possible replacements will be unusable if Heyward-Bey is ruled out at kickoff.