The Giants released Tom on Sunday.

Tom was sent back to Triple-A Sacramento on Saturday, Maria I. Guardado of MLB.com reports.

Tom's contract was selected from Triple-A Sacramento prior to Friday's game against the Nationals, Susan Slusser of the San Francisco Chronicle reports.

Tom signed a minor-league contract with the Giants on Friday, Susan Slusser of the San Francisco Chronicle reports.

Tom was released by Pittsburgh on Monday, Mike Persak of the Pittsburgh Post-Gazette reports.

The Pirates outrighted Tom to Triple-A Indianapolis on Thursday after he cleared waivers, Jason Mackey of the Pittsburgh Post-Gazette reports.

The Pirates activated Tom (back) from the 10-day injured list Monday and designated him for assignment, Mike Persak of the Pittsburgh Post-Gazette reports.

Tom (back) began a rehab assignment with Triple-A Indianapolis on Tuesday, Jake Crouse of MLB.com reports.

Tom (back) recently reaggravated his back injury and will be shut down until early next week, Kevin Gorman of TribLive.com reports.