The San Francisco 49ers finished the 2012 season with an NFL-high four wide receivers who entered the NFL as first-round draft choices.One of them, Michael Crabtree, enjoyed a breakout season with 1,105 yards during the regular season, plus 20 receptions for 285 yards and three scores in the playoffs.It's still fair to wonder whether wide receiver ranks high on the 49ers' list of needs heading into the NFL scouting combine and free agency. Randy Moss is 36 years old and without a contract.