The Diamondbacks activated Gurriel (hamstring) from the 10-day injured list Monday.
Gurriel has been shelved since late May with a strained left hamstring, but he's been cleared to return to action after going 4-for-16 in five rehab games for the Diamondbacks' Arizona Complex League affiliate. The 32-year-old could see most of his playing time at designated hitter for the Diamondbacks, though left field is also an option.