His father, Edward, played football at Florida State, while his mother, Kim, ran track at University of Louisville...Played soccer and football in his youth and did not begin pitching until the ninth grade.
In his sixth major-league season went 2-0 with a 6.84 ERA (20 ER/26.1 IP) in 19 appearances out of the bullpen...In his 19 relief appearances, Jackson induced 60 ground balls, the most among relievers in baseball…An average of 3.16 ground balls per outing... Among relievers with 19 or more appearances, his 1.1 average innings per appearance is the highest in the majors... He compiled 26.1 innings pitched in just 19 appearances...His 20 earned runs allowed were tied for the third most among relievers in baseball.
Went 9-2 with a 3.84 ERA (31 ER/72.2 IP) in a career-high and team-most 70 games... Converted 18 of his 25 save chances after logging just one career save prior to 2019... Had nine wins out of the bullpen, the most by a Braves reliever since Mike Remlinger had 10 in 1999...His nine wins tied for fifth most by a Braves reliever since 1913... Per Statcast, had an average exit velocity of 87.9 mph and an expected batting average of just .207...Opponents officially batted .266 against him... Opponents batted .388 against him on balls put in play…The major league average for BABIP was .298... Fanned 106 batters in 72.2 innings for a careerbest 13.13 SO/9.0 IP ratio...Struck out the fifthmost batters out of the bullpen in baseball, and his 106 strikeouts tied for the fourth most by a Braves reliever in Atlanta franchise history (since 1966)... Induced 107 ground balls on the season, and his 60.5 ground ball percentage was third highest in baseball (min. 70.0 IP)... Only Framber Valdez (62.6%) and Dallas Keuchel (61.0%) produced ground balls at a higher clip last season... Recorded his second consecutive two-inning save, 5/15 vs. STL...Became the first Braves closer with back-to-back two-inning saves since Hall of Famer John Smoltz in 2002. ... Allowed a grand slam to Philadelphia's Rhys Hoskins on Opening Day…In his final 69 games of the season, logged a 3.39 ERA (27 ER/71.2 IP). 2019 Postseason ... Pitched in three games against St. Louis in the NLDS, logging a 10.13 ERA (3 ER/2.2 IP)…Struck out six.
In his second season in the Atlanta organization, split the year between the Braves and Triple-A Gwinnett ... Had four different stints with Atlanta, going 1-2 with a 4.43 ERA (20 ER/40.2 IP) in 35 games out of the bullpen…Also collected his first career save ... Began the season with the Stripers before joining the Braves, 4/4-4/15 and 5/6-5/8…Rejoined the club on 6/5 before being designated for assignment on 6/13…Elected free agency on 6/15 but returned to the Braves on a major league deal, 6/17…Remained with the club for the rest of the season ... Struck out 46 batters in his 40.2 innings with Atlanta (10.18 SO/9.0 IP), and struck out 80 batters in 62.0 combined innings between the Braves and Triple-A Gwinnett ... Allowed 23 hits and 12 runs, 10 earned, over his final 15 games (5.51 ERA/ 16.1 IP)...Compiled a 3.70 ERA (10 ER/24.1 IP) through his first 20 games ... Finished with eight outings of at least 2.0 innings with a 1.86 ERA (4 ER/19.1 IP) with one save in those appearances...Threw a career-most 62 pitches over 3.0 innings, 7/3 at NYY ... Earned his first career save on 6/5 at SD ... Major league righties hit .284 (29-for-102) against him with all three of the home runs he allowed, while lefties batted .214 (12-for-56).
In his first season in the Braves organization, appeared in 43 games out of the bullpen for Atlanta, while also spending time with Triple-A Gwinnett…Also missed 12 games on the MLB disabled list with a right shoulder strain, 8/18-9/1...Began the season with the G-Braves in the starting rotation, before he was recalled to Atlanta on 4/14…Optioned to Triple-A on 4/19 before returning to the majors for the remainder of the season on 5/20...His 43 appearances were a career-high total…Had 15 games combined over the last two seasons with Texas...Allowed a run in just nine of his 43 appearances…Surrendered a career high-tying six runs on 8/16 at COL...Won his first major league game, 5/23 vs. PIT…Retired the only batter he faced on one pitch to earn a 6-5 win... Fanned a career-high six batters over 2.1 innings of relief, 8/11 at StL... Became the first Atlanta reliever to tally six strikeouts in an appearance since Cristhian Martinez on 7/26/11 vs. PIT, and the first to do so in 2.1 innings or fewer since Mike Bielecki on 8/3/96 at LAD...Went a career-long 4.0 innings, 6/25 vs. MIL…Allowed just two hits over the scoreless outing to become the first Braves reliever to go as long in a scoreless relief outing since Freddy Garcia tossed 4.2 shutout innings out of the bullpen on 9/1/13 vs. MIA...Limited left-handed hitters to a .217 average (18-for-83) with no home runs…Righties hit .322 (37-for-15) with all four of his home runs allowed.
Split the season between Texas, the 15-day disabled list and the minor leagues, appearing in eight games for the Rangers... Also played with Double-A Frisco and Triple-A Round Rock... Began the year on the 15-day DL with back stiff ness...Reinstated on 4/13 and optioned that day to Round Rock... Returned to Texas on 5/16 until returning to Round Rock on 6/9...Also up from 6/22-7/3...Spent the remainder of the season with Frisco, striking out better than a batter per inning (32 SO/241. IP)...For the minor league season, compiled a 1-1 record and a 3.69 ERA (19 ER/46.1 IP) in 36 games out of the bullpen...Also had three saves.
Had no record and a 4.26 ERA (3 ER/6.1 IP) in seven games over two stints (Aug. 8-10 and Sept. 1-end of season) with Texas in his first ML action…rated as the club's 12th-best prospect by Baseball America prior to the season and made the conversion to the bullpen in early May after starting 97 of his first 101 pro games… had a career-best 10.7 SO/9 with Round Rock, including 12.7 SO/9 as a reliever.
Combined to go 9-5 with a 5.40 ERA (74 ER/123.1 IP) in 26 games/24 starts for Frisco (AA) and Round Rock (AAA)...his 126 strikeouts ranked 3rd among all Texas minor league pitchers...added to 40-man roster on 11/20/14 as protection from Rule 5 Draft...prior to season, rated by Baseball America as Rangers' no. 7 prospect.
Tabbed the organization's Nolan Ryan Minor League Pitcher of the Year, posting the 8th-lowest ERA among all full season minor league pitchers...combined to go 11-4 with a 2.04 ERA (29 ER/128.0 IP) and 134 strikeouts over 25 games/23 starts with Myrtle Beach (High-A) and Frisco...opposition batted just .202 (92-455), 7th-lowest among all full season pitchers...career bests in wins, ERA, and WHIP (1.180)...rated as the 9th-best prospect in the Carolina League by Baseball America...started for the Carolina League in the Carolina League-California League All-Star Game...held left-handed batters to a .193 average (31-161)...opposition batted .141 (14-99) with runners in scoring position...was Myrtle Beach's Opening Day starter, going 4-1, 1.72 ERA (6 ER/31.1 IP) over first 7 starts...won each of his last 5 decisions with the Pelicans, compiling a 2.13 ERA (13 ER/55.0 IP) over final 9 starts...promoted to Frisco on 8/1...did not allow a run over his first 20.0 innings with the RoughRiders, a span of 5 games/4 starts...tossed 5.0 no-hit innings on 8/20 at San Antonio...Texas League opponents batted just .144 (13-90) with 2 extra-base hits (2 2B).
Split campaign between Hickory (A) and Myrtle Beach...combined to go 10-7 with a 4.65 ERA (67 ER/129.2 IP) and career-high 146 strikeouts against 65 walks over 26 games/starts...tallied the 2nd-most strikeouts among Texas farmhands and 12th-most among all Class A pitchers...combined to average 10.1 SO per 9.0 IP...ranked as the 16th-best prospect in the Carolina League by Baseball America...opened the season in the Hickory rotation and went 2-0 with a 1.31 ERA (3 ER/20.2 IP) and 29 strikeouts against 7 walks over his first 4 starts...went 3-1 with a 3.25 ERA (10 ER/27.2 IP) over last 5 starts with Crawdads...promoted to Myrtle Beach 6/22...registered career-best 12 strikeouts over 5.0 innings 7/17 vs. Wilmington...posted a 2.41 ERA (10 ER/37.1 IP) over final 7 starts of the season.
Spent first professional season with Hickory, joining the club on 5/20...averaged 9.4 SO per 9.0 IP...held right-handed batters to a .263 (47-179) average, while the opposition hit .276 (83-301) overall...worked at least 5.0 innings and allowed 2 ER-or-less in 7 starts...went 3-0 with a 2.95 ERA (7 ER/21.1 IP) and held opponents to a .179 (14-78) average over 5 starts in June...registered a season-best 10 SO on 6/16 vs. Charleston.
Did not see official action after signing first professional contract...signed by Juan Alvarez on 8/16/10.