According to a press release, the Rockies acquired outfielder Matt Murton from the A's for infielder Corey Wimberly.
Murton, 27, has a career line of .288/.354/.438 in 1002 plate appearances. He's been involved in two big trades - the Nomar Garciaparra deal in '04 and the Rich Harden trade last year. Murton spent most of '08 in the minors and did not show much power.
Wimberly, 25, ranked as the Rockies' 26th-best prospect in the '09 Baseball America Handbook. He went unclaimed in the Rule 5 draft in December after hitting .291/.370/.345 in Double A. The speedster is said to be in the Bip Roberts mold, according to BA.