SANTA CLARA, Calif. -- One of the most intriguing players currently on the San Francisco 49ers' roster is third-year receiver Jon Baldwin.It appears Baldwin is getting his chance to play significantly and perhaps start for the time being. Baldwin made his San Francisco debut in Week 4 at St. Louis, when he had two catches for 19 yards. Baldwin will be at the top of the rotation with rookie Quinton Patton out 4-6 weeks with a broken foot. Patton was the no.