49ers declared RB Brandon Jacobs, WR Ted Ginn Jr., WR A.J. Jenkins, RB LaMichael James, G Joe Looney, TE Garrett Celek and NT Ian Williams inactive for Week 2 against the Lions. No surprises for the 49ers, who are without Jacobs and Ginn for the second straight week. It reflects poorly on rookies Jenkins and James that they can't crack the game-day 46 despite Jacobs and Ginn's absences. Kyle Williams will again fill in for Ginn on punt returns, while Kendall Hunter will operate as Frank Gore's change-of-pace backup.