The Marlins acquired lefty Nate Robertson and cash considerations from the Tigers for minor league reliever Jay Voss, according to a Tigers press release.  The Tigers are paying $9.6MM of the $10MM owed to Robertson, tweets Ken Rosenthal of FOX Sports.

Robertson originally came up through the Marlins' system, and was traded to the Tigers in the Mark Redman deal in January of '03.  The 32-year-old posted a 5.44 ERA, 6.3 K/9, and 5.1 BB/9 in 49.6 innings last year.  He started the '09 season in the Tigers' bullpen and hit the DL in May with a back strain.  In June, he had surgery to remove four masses in his elbow.  He rejoined the rotation in September, but strained his groin shortly thereafter.  Robertson had November surgery to repair that tear.  With a fresh start in Florida, perhaps Robertson can chew up 175 innings with an ERA around 4.50.  The trade opens the Tigers' fifth starter spot for Dontrelle Willis.

Voss, also a southpaw, turns 23 in April.  He spent '09 as a reliever, posting a 2.72 ERA, 8.3 K/9, and 3.3 BB/9 at High A and Double A.  Baseball America ranked Voss 23rd among Marlins prospects, seemingly projecting a future as a lefty specialist.