Daniel Mengden

He made his major league debut on June 11, 2016, against the Cincinnati Reds. He won his first major league game in the Battle of the Bay against the San Francisco Giants on June 27,2016. He'd remain in the rotation for the remainder of the season, finishing with 14 starts for the A's. Mengden recorded 2 wins and 9 losses with 71 K's in 72 innings. Mengden spent the majority of the 2017 season in the minors, only pitching 7 starts for Oakland. In 2018, he was 7-6 with an ERA of 4.05 in 22 games (17 starts). Mengden did not replicate his success in 2019 as he had done the previous season, going 5-2 with an ERA of 4.83 in 13 games (9 starts).

Prior to the 2015 trade deadline, the Astros traded Mengden and Jacob Nottingham to the Oakland Athletics for Scott Kazmir. He began the 2016 season with the Double-A Midland RockHounds, but was promoted to the Triple-A Nashville Sounds on May 1. With Nashville, he had a 3–1 record with a 1.39 ERA in seven starts.

Mengden was drafted by the Houston Astros in the fourth round of the 2014 Major League Baseball draft. He made his professional debut with the Gulf Coast Astros and was later promoted to the Tri-City ValleyCats. Mengden started 2015 with the Quad Cities River Bandits and was promoted to the Lancaster JetHawks after recording a 1.16 ERA.

After graduating from Westside High School in Houston, Texas, Mengden played college baseball at Texas A&M University from 2012 to 2014. During his three years, he appeared in 54 games with 36 starts. He went 15–17 with a 3.21 earned run average (ERA) and 230 strikeouts.

Daniel Joseph Mengden (born February 19, 1993) is an American professional baseball pitcher for the Oakland Athletics of Major League Baseball (MLB).