Red Sox don't tender contracts to 3 players
The team also announced Friday that it had tendered contracts to the other 30 unsigned players on the major league roster.
Atchison was 2-1 with a 1.58 ERA in 42 games last season, all in relief. Hill made 25 relief appearances for the Red Sox, going 1-0 with a 1.83 ERA. Sweeney hit .260 with no homers and 16 RBIs in 63 games and was on the disabled list three times.
The team also appointed Victor Rodriguez as assistant hitting coach. Greg Colbrunn became the hitting coach on Wednesday under new manager John Farrell. Rodriguez was Boston's minor league hitting coordinator the past six seasons.