From BR Bullpen
- Bats Right, Throws Right
- Height 6' 2", Weight 240 lb.
 Biographical Information
Peralta signed with the Milwaukee Brewers in November 2005; the scouts were Fernando Arango and Fausto Sosa Pena. He debuted with the 2006 AZL Brewers, going 2-5 with a 6.63 ERA and 1.87 WHIP, hardly promising numbers. He tied for 7th in the Arizona League in losses and tied for 10th with 37 runs allowed. He then missed 2007 with Tommy John surgery. Back in action in 2008, he was 1-1 with two saves and a 3.07 ERA for the Helena Brewers, striking out 36 in 29 1/3 IP. He also was 0-1 with 6 runs in 5 innings for the West Virginia Power. Baseball America rated him as the 16th-best prospect in the Pioneer League, between All-Star outfielders Angel Castillo and Erik Komatsu.
With the Wisconsin Timber Rattlers in 2009, the youngster was 4-4 with a save, 3.47 ERA and 118 K in 103 2/3 innings. The hard-throwing right-hander (peak of 95 mph) was ranked by Baseball America as the Midwest League's #14 prospect, between A.J. Pollock and James Darnell. He split 2010 between the Brevard County Manatees (6-3, 3.86) and Huntsville Stars (2-3, 3.61) with a drop-off in his K rate (104 in 147 1/3 IP) and more walks (64). Baseball America rated him as the third-best Brewers prospect going into 2011.
In 2011, Peralta improved on his prior season. He was 9-7 with a 3.46 ERA for Huntsville, fanning 117 in 119 2/3 IP, then was 2-0 with a 2.03 ERA and 40 K in 31 IP in 5 games for the AAA Nashville Sounds. He led the Southern League in ERA by .20 over Andrew Carraway but lost All-Star right-handed pitcher honors to Nathan Eovaldi. He was among the Milwaukee farm chain leaders in wins (second to Michael Fiers) and strikeouts (3 shy of leader Tyler Thornburg). Among Milwaukee minor leaguers with 100+ innings, only Fiers and Thornburg had lower ERAs. Baseball America rated him as the #8 prospect in the Southern League, between Randall Delgado and Yasmani Grandal and as the top Milwaukee prospect (56th overall in the majors) entering 2012.
In winter ball in 2011-2012, Peralta was 1-3 with a 4.68 ERA for the Gigantes del Cibao. Peralta began the summer of 2012 back with Nashville and was very sharp in his first three outings (0-1, 2.13, 9 H in 17 IP). He was called up to the major leagues when Chris Narveson got hurt.
In his MLB debut on April 22, 2012, the Samana native replaced Francisco Rodriguez in the top of the 9th with a 3-1 deficit facing the Colorado Rockies. He allowed singles to the first two batters he faced, Dexter Fowler and Marco Scútaro before fanning Tyler Colvin. Carlos González singled home Fowler. Peralta got Troy Tulowitzki to then ground into an inning-ending double play to end a forgettable first inning in The Show.