Daulton Compton Jefferies was born August 2, 1995, he is an American professional baseball pitcher for the Oakland Athletics of Major League Baseball (MLB).
He played college baseball for the California Golden Bears. He was selected by the Athletics with the 37th overall pick of the 2016 MLB draft, and he made his MLB debut in 2020.
As a freshman for the California Golden Bears in 2014, Jefferies started 15 games, finishing the year 2–8 with a 3.45 ERA and 58 strikeouts in a team-high 92+2⁄3 innings.
Jefferies’ sophomore season saw both his record and earned run average improve, as he appeared in 14 games, starting 13, and went 6–5 with a 2.92 ERA, enough to warrant a First Team All-Pac-12 selection.
ERA with 17 strikeouts in 11.1 innings pitched. He pitched in only two games for the Stockton Ports in 2017 before undergoing Tommy John surgery, thus ending his season.
He appeared in one game in the AZL in 2018 as he continued to rehab his way back to full health. Jefferies split the 2019 season between Stockton and the Midland RockHounds, going a combined 2–2 with a 3.41 ERA over 79 innings.
Jefferies was added to the Athletics 40–man roster following the 2019 season. Jefferies was called up as the extra man for a doubleheader on September 12, 2020 against the Texas Rangers. It was his major league debut, but it did not go well as Jefferies only lasted two innings, giving up five runs on two home runs and taking the loss.
There are no details about his marital status. He may be married or unmarried. There are also no rumors about his wife and girlfriend.