Raiders defensive end Richard Seymour did not participate in practice on Friday and is listed as questionable for Sunday’s contest against the New York Jets. Seymour, who was sidelined with an undisclosed illness, had four tackles and a pair of sacks last Sunday in Oakland’s 13-9 win over Philadelphia. Also listed as questionable is defensive end Greg Ellis (knee), who has 16 tackles and four sacks in six starts for the 2-4 Raiders.