Triolo (back) will report to Triple-A Indianapolis to begin a rehab assignment Tuesday, Kevin Gorman of TribLive.com reports.
The 27-year-old infielder, who is recovering from a lumbar spine strain, has been cleared for game action in the minors after he was able to field grounders Monday without issue. Triolo is eligible to return from the 10-day injured list Wednesday, and while he appears unlikely to be activated on that day, he likely won't require much time beyond that before rejoining the Pirates.