Cowboys bolster offensive line with three signings

The Dallas Cowboys added three offensive linemen on Monday, when they announced the signing of free-agent tackle Cameron Fleming and interior lineman Marcus Martin along with the re-signing of interior lineman Joe Looney to a two-year contract. Fleming spent the past four seasons with the Patriots since the team selected him in the fourth round of the 2014 draft out of Stanford. The 6-foot-5, 323-pound Fleming started 20 of his 47 games in New England. He was a starter at right tackle in the AFC Championship Game and the Super Bowl last season. Fleming signed a one-year deal with Dallas. His addition will likely move La'el Collins to left guard, a spot he played as a rookie in 2015. Looney has been a key reserve for the past two seasons, serving as a backup at guard and center. Martin, a third-round pick in the 2014 draft out of USC, played his first three seasons with the San Francisco 49ers, who waived him last offseason. The 24-year-old was claimed by the Cleveland Browns, but did not play last season. Martin has made 24 career starts.