San Diego Padres Minor Leagues The
San Diego Padres selected Decker in the first round, with the 42nd overall selection, of the
2008 Major League Baseball draft. He began his professional career in 2008 with 49 games with the
AZL Padres in the
rookie-level
Arizona League, where he had a
batting average of .352 and had five home runs and 34
runs batted in (RBI), and three games with the
Eugene Emeralds of the
Low–A Northwest League, where he went 2-for-10, in Promoted to the
Lake Elsinore Storm in the
High–A California League in 2010, Decker hit .262 with an .874 OPS, hit 17 home runs, and drove in 58 runs, but he was limited to 79 games This limited him to only 47 games and a .184 batting average, three home runs, and nine RBI with San Antonio. but he was
optioned back to Tucson on June 14 without appearing in a game, briefly becoming a
phantom ballplayer. He was recalled to San Diego on June 19 when
Everth Cabrera went on the disabled list, and made two pinch-hitting appearances in which he walked and reached base on an error before being sent back to Tucson. He reached the major leagues for a third time on August 10, 2013, when
Carlos Quentin was placed on the disabled list. On August 12, Decker recorded his first major-league hit, a solo home run off of
Colorado Rockies starting pitcher
Jhoulys Chacín during a 14–2 loss. Decker made seven starts for the Padres in left field in August 2013, playing in 13 games overall on the year and collecting four hits in 26 at-bats (.154). The Padres returned Decker to Tucson on August 26, when they called up
Reymond Fuentes, and Decker stayed in Tucson after major-league rosters expanded to 40 players in September. At Tucson, Decker hit .286 for the season with 10 home runs and 40 RBI.
Pittsburgh Pirates On November 25, 2013, the Padres traded Decker to the
Pittsburgh Pirates along with
Miles Mikolas in exchange for
Alex Dickerson. The Pirates optioned him to the
Indianapolis Indians in the
Triple–A International League on March 25, 2014. During three stints with the Pirates during 2014, Decker played in five major-league games, going 0-for-5, and he played in 104 games for Indianapolis, hitting .257 with six home runs and 39 RBI.
Oakland Athletics On November 22, 2016, Decker signed a minor league contract with the
Oakland Athletics with an invitation to major league
spring training. In the final cut of spring training, the Athletics assigned Decker to the
Nashville Sounds of the Triple–A Pacific Coast League to begin the 2017 season. On April 15, 2017, the Athletics selected Decker's contract from Nashville and added him to the Oakland's 25-man active roster. He hit .200 with an RBI in 17 games for Oakland before the Athletics removed him from the 40–man roster and sent him outright to Nashville on May 13. He remained with the Sounds for the rest of the season, and during the year played in 93 games for Nashville, hitting .274 with six home runs and 36 RBI.
Atlanta Braves On January 27, 2018, Decker signed a minor league deal with the
Atlanta Braves. Atlanta assigned him to the
Gwinnett Stripers in the Triple–A International League, where he played in 15 games, hitting .274 with a home run and four RBI The Nationals assigned him to the
Syracuse Chiefs in the Triple–A International League. He was released by the Nationals organization on July 17. ==Personal life==