Vizcaino has been sidelined since feeling right elbow discomfort while pitching in the March 3 Grapefruit League opener. An MRI exam performed last week showed inflammation. The Braves are describing his ailment as ulnar neuritis.
After being diagnosed with a partially torn ulnar collateral ligament in his right elbow during the 2010 season, Vizcaino rested for a few months and was throwing 95-mph fastballs again in September in instructional league.
Andrews will likely evaluate whether Vizcaino could once again avoid Tommy John surgery with rest. If the 21-year-old reliever undergoes the operation, he will miss the upcoming season.
Vizcaino -- rated by MLB.com as the Braves' second-best prospect and 36th in the entire Minor Leagues -- entered Spring Training with a chance to begin the season in Atlanta's bullpen. The Braves converted him to a relief role at the Double-A level in July and promoted him to the Majors one month later. He proved effective in August before showing signs of fatigue in September.