Gabe Speier

On September 3, 2019, the Royals selected Speier's contract and promoted him to the major leagues. He made his major league debut on September 5 versus the Detroit Tigers, pitching a scoreless inning in relief.

On June 6, 2018, the Diamondbacks traded Speier and Elvis Luciano to the Kansas City Royals for Jon Jay. He was then assigned to the Northwest Arkansas Naturals. In 46 relief appearances between the two teams, he went 1-0 with a 3.39 ERA. He began the 2019 season with Northwest Arkansas before being promoted to the Omaha Storm Chasers.

On November 20, 2015, the Tigers traded Speier and Ian Krol to the Atlanta Braves for Cameron Maybin.

He was then traded again on December 9, 2015; the Braves traded him and Shelby Miller to the Arizona Diamondbacks in exchange for Dansby Swanson, Ender Inciarte, and Aaron Blair. He spent 2016 with the Kane County Cougars, AZL Diamondbacks, Visalia Rawhide, and Mobile BayBears, pitching to a combined 4-2 record, 2.62 ERA, and 1.20 WHIP in 39 appearances out of the bullpen. In 2017, he pitched for the Jackson Generals, collecting a 2-6 record and 4.30 ERA in 69 innings pitched.

On December 11, 2014, the Red Sox traded Speier with Yoenis Céspedes and Alex Wilson to the Detroit Tigers for Rick Porcello. He spent the 2015 season with the West Michigan Whitecaps where he compiled a 4-2 record and 2.86 ERA in 33 relief appearances.

The Boston Red Sox selected Speier in the 19th round of the 2013 MLB draft and he signed.

After signing, Speier pitched four innings for the GCL Red Sox in 2013. He returned there in 2014 where he went 3-0 with a 1.55 ERA in nine games (six starts).

Gabriel James Speier (born April 12, 1995) is an American professional baseball pitcher for the Kansas City Royals of Major League Baseball (MLB).