Potential 2012 starting outfielder Trayvon Robinson, 23, has been sent by the Dodgers to Seattle as part of a three-team trade that brought Boston minor-leaguers Tim Federowicz, Juan Rodriguez and Stephen Fife to the Dodgers. Erik Bedard was the main prize of the deal, going from the Mariners to the Red Sox.For the Dodgers, the key to the deal appears to be Federowicz, a catcher who will contend for playing time in Los Angeles next year. I think I might have been happier with Mark Brendanowicz. Turning 24 on Friday, Federowicz only has a .337 on-base percentage and .397 slugging percentage, however, with Double-A Portland in the Eastern League. SoxProspects.com praises his defense.Rodriguez, a 22-year-old righthander, has pitched out of the bullpen this year and has 88 strikeouts in 59 inn