Roberts joins right-handed pitcher Jacob Garcia as pitching additions from the Black Sox, the Railroaders opponents during the 2021 exhibition schedule. A native of Canton, Georgia, Roberts pitched in three exhibition games against the Railroaders before signing. The 2021 season will be his first in professional baseball.

The lefty pitched at three different stops during his collegiate career, beginning with a pair of seasons as a two-way player at Georgia Highlands College from 2015-16. As a freshman, he allowed only one earned run in 10.1 innings for the Chargers, then went 3-1 with a 5.86 ERA the following season. Roberts transferred to Presbyterian College in 2017, appearing in nine games with the Blue Hose and notching ten strikeouts over 7.1 innings of work.

Roberts finished his college career at Georgia Southern, where the 24-year-old pitched in six games during his lone season with the Eagles in 2019.