The San Francisco 49ers had good success in veteran free agency in 2013. Let's take a look back at the impact the veteran acquisitions made in alphabetical orderNnamdi Asomugha: This one didn't work out. Asomugha had nothing left and the 49ers cut him during the season. He didn't cost much, so it was not a major issue.Craig Dahl: A backup and a special teamer. Solid addition.Phil Dawson: He was a difference maker. He made 32 of 36 field goal attempts and he made 27 in a row.