Minor Moves: Red Sox, Cubs, Rockies, Nationals

We'll keep track of today's minor moves here…

• Right-hander Scott Atchison signed a minor league contract with the Red Sox after being removed from the 40-man roster and clearing waivers, according to Matt Eddy of Baseball America.
• The Cubs signed left-hander Nate Robertson to a minor league deal, Eddy writes.  Robertson had a 7.14 ERA with 5.3 K/9 and 3.7 BB/9 in 18 starts with the Mariners' Triple-A affiliate last season.
• The Rockies signed left-handed pitcher Royce Ring, according to Eddy.  The former first-round pick saw time in the majors for four different clubs between 2005-2010.  Ring spent time with the Triple-A affiliates for Seattle and Boston last season.
• The Nationals signed right-hander Mike Schultz, who has one big league inning to his credit from his time with Arizona in 2007.  The 32-year-old has been pitching well in Japan for the last four years, posting a 2.55 ERA with 7.5 K/9 and 3.2 BB/9.
• MLBTR has learned that the Orioles signed catcher Josh Johnson.  The 29-year-old played the last three years in the Atlantic League but prior to that spent time with the Rays and Astros Triple-A affiliates.
• The Red Sox signed right-handed pitchers Garrett Mock and Billy Buckner to minor league deals and will report to minor league camp, an industry source tells Alex Speier of WEEI.com.  Mock, 28, was once considered a top pitching prospect by Washington but strugged in 2011 as he posted a 6.39 ERA with 9.3 K/9 and 5.3 BB/9.  Buckner, meanwhile, made 21 starts and two relief appearances for the Rockies' Triple-A affiliate in 2011. 
• The Dodgers signed right-hander Blake Johnson and shortstop Brandon Mims to minor league deals following this week's open tryout, Dylan Hernandez of the LA Times tweets. Johnson spent the 2011 season in the upper minors with the Royals and Rockies, posting a 5.59 ERA in 77 1/3 innings. Mims, 19, was the Blue Jays' ninth round selection in 2010.
• The Orioles signed 27-year-old Mexican pitcher Miguel Gonzalez to a minor league deal, the pitcher told Fernando Ballesteros at Puro Béisbol (link in Spanish). Gonzalez posted decent strikeout rates across three levels in the Red Sox system last year after two years away from the minors. He told Ballesteros he will start off at Triple-A for the Orioles.