New Twins manager Derek Shelton, in Las Vegas this week for baseball’s general managers meetings, is adding to his coaching staff, according to reports from multiple outlets.

A source with knowledge of the process has confirmed that former all-star outfielder Grady Sizemore will join the staff as the first base coach and work with the outfielders and baserunners.

Several of the coaches on Rocco Baldelli’s staff have been retained by Shelton, including pitching coach Pete Maki, pitching coach and assistant hitting coaches Rayden Sierra and Luis Ramirez.

Ramon Borrego,who served as first base coach last season, will stay and become the third base coach. The Athletic has reported that Baldelli’s third base coach, Tommy Watkins, is taking a job with the Atlanta Braves.