The 49ers roster, which stood at 75 players on Friday, must be down to 53 by 3 p.m. today. From left, San Francisco 49ers defensive back Nnamdi Asomugha (24), defensive back Michael Thomas (36), cornerback Lowell Rose (40) and linebacker Dan Skuta (51) run during practice at the team's NFL football training facility in Santa Clara, Calif., Wednesday, June 12, 2013.