The top-ranked pitcher on MLB Pipeline's Top 30 international prospects list for 2013, Diplan landed a $1.3 million bonus from the Rangers and dazzled during his pro debut in the Dominican Summer League. The Brewers acquired him during the offseason in the January 2015 trade involving Yovani Gallardo, and he was moving quickly through Minors, pitching well at each stop, before regressing in his return to Class A Advanced in 2017. While the results weren't all that much better for Diplan in 2018, he still managed to reach Double-A at age 21
An undersized right-hander with a quick arm, Diplan will sit in the mid-90s when he's at his best, but his velocity tends to fluctuate from outing to outing, depending on how well he's repeating his delivery and whether he's staying on line to the plate. Those same mechanical issues also affect his slider, which can flush plus with devastating action but usually plays closer to average. His changeup has progressed enough that it's now viewed as his better secondary offering, receiving above-average grades from evaluators. Diplan has well-below-average control that has regressed with each season, and he posted the worst walk rate of his career (5.6 walks-per-nine) with a career-high walk total (74) in 2018.
Despite his inconsistent performance during the regular season, Diplan finished on a high note by striking out 10 and issuing two walks over six one-hit innings to lead Biloxi into the Southern League Championship Series. While it was the type of performance that offers hope that Diplan might still develop into a mid-rotation starter, the growing consensus among evaluators is that the right-hander will end up in the bullpen.
Baltimore Orioles sent RHP Marcos Diplan outright to Norfolk Tides.
Baltimore Orioles designated RHP Marcos Diplan for assignment.
Baltimore Orioles claimed RHP Marcos Diplan off waivers from Detroit Tigers.
RHP Marcos Diplan assigned to Aguilas Cibaenas.
Detroit Tigers activated RHP Marcos Diplan.
Detroit Tigers claimed RHP Marcos Diplan off waivers from Minnesota Twins.
Minnesota Twins designated RHP Marcos Diplan for assignment.
RHP Marcos Diplan assigned to Pensacola Blue Wahoos.
Milwaukee Brewers traded RHP Marcos Diplan to Minnesota Twins for cash.
Milwaukee Brewers designated RHP Marcos Diplan for assignment.
Milwaukee Brewers optioned RHP Marcos Diplan to Biloxi Shuckers.
Milwaukee Brewers recalled RHP Marcos Diplan from Biloxi Shuckers.
RHP Marcos Diplan assigned to Biloxi Shuckers from Carolina Mudcats.
RHP Marcos Diplan assigned to Carolina Mudcats from Colorado Springs Sky Sox.
Milwaukee Brewers optioned RHP Marcos Diplan to Colorado Springs Sky Sox.
Milwaukee Brewers selected the contract of Marcos Diplan from Carolina Mudcats.
RHP Marcos Diplan assigned to Carolina Mudcats from Wisconsin Timber Rattlers.
RHP Marcos Diplan assigned to Wisconsin Timber Rattlers from Brevard County Manatees.
RHP Marcos Diplan assigned to Brevard County Manatees from Wisconsin Timber Rattlers.
RHP Marcos Diplan assigned to Wisconsin Timber Rattlers from Helena Brewers.
RHP Marcos Diplan assigned to Helena Brewers.
Milwaukee Brewers traded cash and RHP Yovani Gallardo to Texas Rangers for RHP Corey Knebel, SS Luis Sardinas and RHP Marcos Diplan.
RHP Marcos Diplan assigned to DSL Rangers1.
Texas Rangers signed free agent Marcos Diplan.