Conversation so far:
How did the Colorado Rockies obtain Jason Giambi?
Looking for a veteran bat to help their playoff push, the Colorado Rockies agreed to a deal with Jason Giambi on August 23, 2009.
Who did the Colorado Rockies get Jason Giambi from?
On August 7, 2009, Jason Giambi was released by the Oakland Athletics.

Question: Who did the Rockies give up for him?
Self-contained rewrite: Who did the Colorado Rockies give up for Jason Giambi?