Former Cy Young winner Frank Viola is due to join the Las Vegas 51s, the Triple-A affiliate of the New York Mets, next Friday after recovering from open-heart surgery. Viola, 54, underwent the procedure on April 2 after a spring-training physical detected an irregularity. Before the medical issue arose, Viola had been slated to open the season as pitching coach for the Pacific Coast League club. He spent the previous three years in the organization as a Class A pitching coach. Read more http://espn.go.com/new-york/mlb/sto...nor-league-coach-frank-viola-back-heart-issue