General manager Frank Wren made the announcement Thursday, clearing up perhaps the most compelling issue of the spring for Atlanta. Minor was optioned to Triple-A Gwinnett along with two other roster contenders, outfielder Jordan Schafer and infielder Diory Hernandez.
The 24-year-old Beachy will join a rotation that already included Derek Lowe, Tim Hudson, Tommy Hanson and Jair Jurrjens. All are right-handers.
Later in the day, however, Jurrjens felt a tweak in his right ribcage while he was pitching against Toronto. He was pulled after one inning as a precaution.
Beachy has a 1.80 ERA in three spring training games with 10 strikeouts and three walks in 10 innings. He really impressed the Braves with his poise when called up during a playoff race late last year. He went 0-2 in three starts, but allowed only five earned runs in 15 innings.
In the minors, Beachy was combined 5-1 with a 1.73 ERA splitting time between Double-A Mississippi and Triple-A Gwinnett.
"We made the decision that Beachy was ahead of Mike at this time in the fifth-starting-pitcher competition," Wren said.
The left-handed Minor went into spring training considered the favorite to win the job. The seventh overall pick in the 2009 draft pitched well, posting a 0.90 ERA with seven strikeouts and four walks in 10 innings.
Last season, Minor pitched in nine games for the Braves, going 3-2 with a 5.98 ERA. He got off to a strong start but struggled with his command and focus.
Lopez was insurance in case the youngsters faltered. Neither did.
With Hernandez heading to the minors, non-roster invitee Ed Lucas has likely earned a spot on the team as a backup shortstop. Schafer came into camp hoping to reclaim the starting job he had at the beginning of the 2009 season but never made a serious run at beating out Nate McLouth in center field.
The Braves also optioned right-handers Juan Abreu and Jairo Asencio to Gwinnett. In addition, the team announced that left-hander Lee Hyde was claimed off waivers by the Washington Nationals and left-hander Jose Ortegano was claimed off waivers by the New York Yankees, leaving 33 players in the major league camp.