Big Unit Back on the Mound Tuesday

Randy Johnson will make his much anticipated season debut Tuesday night against San Diego after the club activated him from the 15-day disabled list.
The 43-year-old Johnson had back surgery in October then pitched in three rehab starts before being cleared to begin his second stint with the Diamondbacks.
He and Arizona fans hope it's just as successful as the first. Johnson won four of his five Cy Young Awards with Arizona and the club won the 2001 World Series.
Then, Johnson spent two frustrating campaigns with the New York Yankees before being shipped to the desert in a January trade.
To make room on the roster for Johnson, the club optioned right-hander Yusmeiro Petit to Triple-A Tucson.