Mariners Acquire Casey Kotchman

The Mariners officially acquired first baseman Casey Kotchman from the Red Sox for Bill Hall, a player to be named later, and cash.  Jason A. Churchill of Prospect Insider says the PTBNL will be a minor league catcher.  Churchill's colleague Chris Crawford first broke news of the Kotchman trade on Tuesday, with Ken Rosenthal of FOX Sports tweeting the Hall element later.

WEEI's Alex Speier explained that this trade was closely linked to Boston's Adrian Beltre signing, and allowed the Red Sox to add Beltre without raising their luxury tax payroll much.  The Mariners, meanwhile, have their regular first baseman and Russell Branyan replacement in Kotchman.  In recent years Kotchman's defense has been strong, his offense subpar.  He's arbitration-eligible this winter and figures to earn more than $3MM in 2010.