With the San Francisco 49ers jumping into the race for Peyton Manning's services, free-agent quarterback Alex Smith is making a play of his own. Smith is flying to Miami to visit Sunday with the Dolphins, a league source told ESPN NFL Insider Adam Schefter. The 49ers have been working to re-sign Smith, the No. 1 overall draft pick in 2005 who made a comeback in 2011 under first-year coach and former NFL QB Jim Harbaugh, and Smith has acknowledged he was happy with their three-year offer. But that was before the 49ers worked out Manning and put him through a physical exam early last week. Read more: http://espn.go.com/nfl/story/_/id/7...sco-49ers-visiting-miami-dolphins-source-says
