The Dolphins have acquired 27-year old inside linebacker Tim Dobbins as part of their compensation for letting the Chargers trade up to draft RB Ryan Mathews.  Dobbins played in 14 games for the Chargers last season and he had 55 tackles, 2 tackles for a loss, he had 1 sack, forced 1 fumble, defensed 1 pass and he had 1 interception.  He has now played four years in his NFL career in which he has made 151 tackles, defensed 6 passes, forced 5 fumbles, had 1 sack and 2 interceptions.  This was a good move for the Dolphins as Dobbins will give them really solid depth at inside linebacker for the 2010 season.