Arizona Diamondbacks De La Rosa was signed as an amateur free agent by the
Arizona Diamondbacks on June 27, 2008. He began his professional career that year with the Diamondbacks'
Dominican Summer League team and then moved to the
Pioneer League the next year with the
Missoula Osprey. In 2010 with the
Yakima Bears of the
Northwest League he had a 1.00
earned run average (ERA) in 27 games The following year he had a 1.36 ERA in 39 games for the
South Bend Silver Hawks of the Single–A
Midwest League. where he made his debut with two perfect innings of relief against the
Milwaukee Brewers on July 14. In 19 appearances for the Diamondbacks during his rookie campaign, De La Rosa struggled to an 0-1 record and 7.36 ERA with 16 strikeouts across innings pitched. De La Rosa made 25 relief appearances for Arizona during the 2014 season, posting a 2-0 record and 2.95 ERA with 32 strikeouts across innings pitched. On December 12, 2014, De La Rosa was
designated for assignment following the acquisitions of
Rubby De La Rosa and
Allen Webster.
Oakland Athletics The Diamondbacks traded De La Rosa to the
Oakland Athletics for cash considerations on December 18, 2014, and the Athletics designated him for assignment on April 25, 2015. He appeared in seven games for the
Nashville Sounds and did not allow a run in his six innings of relief. In six appearances for Oklahoma City, he struggled to a 6.14 ERA with six strikeouts across innings pitched. De La Rosa was designated for assignment on May 19.
San Diego Padres On May 23, 2015, De La Rosa was claimed off waivers by the
San Diego Padres. He was designated for assignment on June 19, following the promotion of
Brett Wallace. On June 21, De La Rosa cleared waivers and was sent outright to the Triple–A
El Paso Chihuahuas. In 17 appearances for the Chihuahuas, he struggled to a 6.50 ERA with 15 strikeouts; however, he saw better results with the Double-A
San Antonio Missions, for whom he logged a 1.27 ERA with 29 strikeouts and seven saves in 19 games.
Long Island Ducks On April 18, 2016, De La Rosa signed with the
Long Island Ducks of the
Atlantic League of Professional Baseball. In 39 appearances (three starts) for Long Island, De La Rosa posted a 3-4 record and 3.26 ERA with 60 strikeouts and one save over 47 innings of work.
Houston Astros On August 14, 2016, De La Rosa's contract was purchased by the
Houston Astros organization. In three games (two starts) for the Triple–A
Fresno Grizzlies, he struggled to an 0–3 record and 15.95 ERA with three strikeouts over innings. De La Rosa elected free agency following the season on November 7.
Long Island Ducks (second stint) On February 15, 2017, De La Rosa re–signed with the
Long Island Ducks of the
Atlantic League of Professional Baseball. In 15 games for the Ducks, he struggled to a 6.38 ERA with 10 strikeouts across innings pitched. De La Rosa became a free agent after the season. After the 2020 season, he played for Panama in the
2021 Caribbean Series. ==References==