According to a major league source, the Red Sox are interested in free agent relief pitcher Matt Guerrier, who has spent his entire seven-year career with the Minnesota Twins.

Guerrier, 32, has been a very reliable source for the Twins in his career as he led the American League with 79 appearances during the 2009 season.  In 2010, Guerrier went 5-7 with a 3.17 ERA in 74 games.

Guerrier could be a good option for the Red Sox as he is primarily a ground ball pitcher and could be an option if the Red Sox depart with either Daniel Bard or Jonathan Papelbon via trade this offseason.  He held right-handers to a .210 average and compiled just 22 walks in 71 innings for Minnesota.

Guerrier had a downside entering free agency as he is a Type-A free agent, which would usually require any team that would sign him (besides the Twins) a high end draft pick in return.  But because the Twins did not offer him arbitration, it would not cost the Red Sox anything.

Here are Guerrier's numbers from 2010:

Guerrier right now is the best right-handed non-closer reliever on the market that was not offered arbitration.  The Red Sox have been looking for bullpen help this offseason, and Guerrier could be a good option, as he has averaged about 70 innings a season.  Could be a good option for the thin Red Sox bullpen.