MLB.com's Bryan Hoch reports that A-Rod will participate in an extended spring game today, his first game action since having surgery on his hip. He also has this:

The club has officially stuck to a projected return date of May 15 for Rodriguez, who had surgery to repair a torn labrum and have a cyst drained on March 9 in Vail, Colo. But Dr. Marc Philippon, who performed the procedure, said on Wednesday that Rodriguez could rejoin the Yankees in 10 days.

10 days would be May 9. Not that big of a difference - 6 days. He'll be back when he's ready.