PHOENIX (AP) -The Arizona Diamondbacks activated left-hander Randy Johnson from the 15-day disabled list in time for him to make his season debut Tuesday night against San Diego.
The 43-year-old Johnson, who had back surgery in October, had three rehabilitation starts in the minors before being cleared to join the Diamondbacks for his second stint with the franchise.
Arizona reacquired Johnson in January after he spent two frustrating seasons with the New York Yankees. Johnson won four of his five Cy Young Awards during his first stint with the Diamondbacks, from 1999-2004.
To make room for Johnson, the Diamondbacks optioned right-hander Yusmeiro Petit to Triple-A Tucson.

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