Jackson appears set to begin the season in the Atlanta bullpen, Mark Bowman of MLB.com reports.
The right-hander has 18 saves and nine holds in 2019, but he was out of the high-leverage mix last year and likely won't regain a prominent spot in 2021. Jackson posted a solid 3.52 ERA and 7:3 K:BB over 7.2 innings this spring and should work primarily in middle relief.