"The end of struggling relief pitcher Scott Proctor's Braves career triggers the much-anticipated arrival of flamethrower Arodys Vizcaino, a top prospect being brought to the majors from Triple-A Gwinnett.

The Braves released Proctor and called up Vizcaino, a 20-year-old right-hander with a fastball that's registered 100 mph on radar guns.

Vizcaino was 5-5 with a 3.06 ERA and 100 strikeouts with 28 walks in 97 innings this season at three minor-league levels, including eight strikeouts with no walks and one earned run allowed in seven relief innings for Gwinnett.

He's the youngest of the Braves' so-called "big four" pitching prospects along with Julio Teheran, Mike Minor and Randall Delgado, whom the Brave refused to include in any trade proposals from many teams that have expressed interest.

Vizcaino is generally ranked as the second-best of the four, slightly behind Teheran.

Proctor, 34, had a 6.44 ERA in 31 appearances this season, and went 1-3 with a 9.16 ERA and .329 opponents' average in his last 18 games.

Signed by the Braves as a free agent before last season, he never regained his best form after two elbow surgeries forced him to miss all of the 2009 with Florida and kept him in the minors for most of 2010."