Orioles trade for reliever with upside fastball, consistency issues

The Orioles and Brewers have announced a three-player trade that will see the O’s land right-handers Thyago Vieira and Aneuris Rodriguez.  Milwaukee will receive minor league righty Garrett Stallings in return.

Vieira is the only member of the trio with any major league experience, as the Sao Paulo native has a 6.18 ERA over 51 career innings in the Show.  He appeared in parts of the 2017-19 seasons with the Mariners and White Sox before spending the next three seasons in Japan and then returning to North American baseball via a minors deal with the Brewers in the 2022-23 offseason.

After making two appearances with Milwaukee’s big league roster last year, injuries opened up more opportunity for Vieira this season, though he didn’t exactly capitalize.  The right-hander posted a 5.64 ERA over 22 1/3 innings for the Crew, allowing six home runs and walking 12.3% of batters.  Despite a big fastball with regular high-90s velocity, Vieira has yet to translate that heat into high-level strikeout volume, as he whiffed a decent but unspectacular 23.6% of batters faced this season.

Between that velocity and solid numbers in NPB and with the Brewers’ Triple-A affiliate in 2023, it isn’t hard to see why the Orioles might have an interest in seeing if Vieira might still be a late bloomer at age 31.  A classic case of a hard thrower with control issues, Vieira’s potential is obvious if the O’s can figure out a way for the righty to harness his stuff.  The Brewers have had a lot of success in helping unheralded pitchers unlock their ability in recent years, though the team opted to move on by designating Vieira for assignment earlier this week.

Rodriguez is more of a longer-term lottery ticket of a prospect, as the righty is still a few weeks away from his 20th birthday.  His pro experience has been limited to two seasons in the Dominican Summer League and some rookie ball action this year, with a cumulative 3.67 ERA over 83 1/3 total innings.

Stallings was a fifth-round pick for the Angels in the 2019 draft, and he came to Baltimore’s organization as part of the return in the December 2020 trade that sent Jose Iglesias to Los Angeles.  Stallings has a 5.41 ERA, 23.1% strikeout rate, and 6.48% walk rate over 379 1/3 career minor league innings.  That includes a 5.52 ERA in 101 innings of Triple-A work, as he has pitched as both as a starter and a reliever at Baltimore’s top affiliate in each of the last two seasons.