NEW YORK -- Frank Viola is due to return to Wally Backman's Triple-A staff as pitching coach, while Jack Voigt will take over as hitting coach for the Las Vegas club, a source told ESPNNewYork.com.
Backman, who took over as manager of Licey in the Dominican Republic in late November, will be the Mets' Triple-A manager for the fourth consecutive season.
Viola will be in his second season as the 51s' pitching coach.
Voigt succeeds George Greer as Las Vegas hitting coach. Greer, passed over for the major league hitting coach gig, left for the St. Louis Cardinals organization.
Voigt spent the past four seasons as the organization's outfield and baserunning coordinator. He is entering his 10th season overall with the Mets. He served as Triple-A Buffalo's hitting coach in 2010. He played six seasons in the majors, with Baltimore, Texas, Milwaukee and Oakland.