ZACH JACKSON NEWS

Out indefinitely after appendectomy Jackson (elbow) had an appendectomy Monday and does not have a timeline for a return to his rehab program, Martin Gallegos of MLB.com reports.

Impact Jackson has made two rehab appearances in the past week as he works on returning from a strained elbow, and now his rehab will go on pause indefinitely. He struck out four and allowed two earned runs in two innings across the two rehab appearances.

AUGUST 1, 2023 • ROTOWIRE

Logs second rehab outing Jackson (elbow) allowed two earned runs on two solo home runs while also recording two strikeouts over one inning in Single-A Stockton's win over Lake Elsinore on Saturday.

Impact Jackson's second rehab outing certainly didn't go as smoothly as the first, when he fired a perfect frame Wednesday. However, Jackson still toughed out a tough inning and recorded a pair of strikeouts along the way, firing 11 of his 17 pitches for strikes. Despite the somewhat rocky appearance Saturday, Jackson will move up to Triple-A Las Vegas for his next rehab outing Tuesday, per Martin Gallegos of MLB.com.

JULY 30, 2023 • ROTOWIRE

Begins rehab assignment Jackson (elbow) began a rehab assignment with Low-A Stockton on Wednesday.

Impact Jackson struck out a pair in a perfect inning in his first game action in more than two months. The reliever should move up to a higher affiliate soon and wouldn't appear far off from rejoining the Athletics' bullpen.

JULY 27, 2023 • ROTOWIRE

Completes another bullpen session Jackson (elbow) threw another bullpen session Saturday, the Associated Press reports.

Impact Jackson also threw a bullpen session the previous Saturday and didn't experience any residual effects, but the Athletics apparently determined he wasn't yet ready to face live hitters. However, if the right-hander's elbow responds well once again in the next few days, a live BP session could well be the next step in Jackson's recovery.

JULY 23, 2023 • ROTOWIRE

No issues after bullpen session Jackson (elbow) did not feel any residual effects from Saturday's bullpen session, the team's official site reports.

Impact Jackson reported feeling good Sunday and is now set to face live hitters in a batting practice session as his next step. The right-hander last saw game action May 16, so he projects for a fairly lengthy rehab assignment whenever he reaches that stage of his recovery.

JULY 17, 2023 • ROTOWIRE

Set for bullpen session Jackson (elbow) is slated to throw a bullpen session Saturday, the team's official site reports.

Impact The right-hander's absence due to a flexor tendon strain is approaching two months, yet Saturday's planned activity is certainly a step in the right direction. Jackson will eventually be ticketed for a lengthy rehab assignment given how long he's been sidelined, but even that step is still likely weeks away.

JULY 15, 2023 • ROTOWIRE

Removed from 40-man roster Jackson (elbow) was transferred from the 15-day injured list to the 60-day injured list by the Athletics on Wednesday.

Impact Jackson will not be eligible to rejoin the Oakland staff now until after the All-Star break, as he was placed on the 15-day injured list May 19 with a flexor tendon strain in his right elbow. The move clears a 40-man roster spot for Angel Felipe after Felip was claimed by the A's off waivers from the Padres.

JUNE 21, 2023 • ROTOWIRE

To begin throwing next week Jackson (elbow) has apparently reached the point where he is pain-free and will begin throwing next week, the team's official site reports.

Impact The right-hander's right flexor tendon strain has been slow to improve, but Jackson is now on the precipice of a throwing program. The 28-year-old could be ready to head out on a rehab assignment by the end of the month if he remains free of setbacks.

JUNE 13, 2023 • ROTOWIRE

Could start throwing soon The Athletics announced Wednesday that Jackson (elbow) could begin a throwing program next week, Martin Gallegos of MLB.com reports.

Impact Jackson has spent the past two and a half weeks resting after he landed on the 15-day injured list May 19 with a right flexor tendon strain. Because he had been serving largely as a one-inning reliever prior to being shut down, Jackson won't required an extensive ramp-up period, though he still looks unlikely to make it back from the IL until at least late June even if he experiences no further setbacks once he starts throwing again.

JUNE 7, 2023 • ROTOWIRE

To IL with flexor strain Jackson was placed on the 15-day injured list by the Athletics on Friday with a right flexor tendon strain.

Impact It's an injury which typically results in longer than a minimum stay on the IL. Jackson was part of the closer mix in a messy A's bullpen situation but now figures to be out of commission for at least a month or so. Not a single active member of the bullpen has recorded a save this season.

MAY 19, 2023 • ROTOWIRE

Earns first save Jackson picked up the save Saturday against the Royals. He gave up one hit and one walk while striking out two over one scoreless inning.

Impact Jackson grabbed his first save of the season, taking advantage of Trevor May's (personal) addition to the 15-day injured list and bouncing back from blowing a save in his first opportunity of the season. Even if May's absence extends beyond 15 days, Jackson will likely remain an unsavory fantasy option considering Saturday's win was just the team's eighth of the year.

MAY 7, 2023 • ROTOWIRE

Gets second win Sunday Jackson (2-1) got the win against the Reds on Sunday, firing a scoreless ninth inning during which he allowed two hits and recorded two strikeouts.

Impact Jackson labored some to preserve the 4-4 tie he'd entered the game under, allowing a single and double to Kevin Newman and Spencer Steer to open the frame. However, he powered himself out of trouble with swinging strikeouts of Jonathan India and Tyler Stephenson before inducing an inning-ending groundout from Henry Ramos. Jackson was then rewarded with his resiliency via Esteury Ruiz's game-winning single in the home half of the ninth, giving him both his 2023 wins in addition to his first hold in the last four appearances.

MAY 1, 2023 • ROTOWIRE

Takes loss Wednesday Jackson (0-1) was charged with the loss in an extra-inning defeat at the hands of the Guardians on Wednesday, allowing two runs (one earned) on a hit, a walk and a wild pitch over...

Impact Tasked with preserving a 4-4 tie when he entered in the 10th inning, Jackson immediately issued a walk to Myles Straw and then uncorked a wild pitch that moved both him and inning-opening runner Andres Gimenez up a base. After subsequently surrendering an RBI groundout and single to Will Brennan and Steven Kwan, respectively, Jackson was on the hook for the loss he was eventually charged with. The right-hander's struggles Wednesday notwithstanding, Jackson should remain a trusted member of the manager Mark Kotsay's late-inning bullpen arsenal and had opened the season with three straight scoreless appearances.

APRIL 6, 2023 • ROTOWIRE

Control issues in spring Jackson sports a 1-0 record, 4.50 ERA and 2.17 WHIP across six innings in six Cactus League appearances.

Impact The right-hander was a highly valuable bullpen asset as a rookie in 2022 before ending the season on the injured list with a shoulder strain, producing a 2-3 record, 27 holds, three saves and a 3.00 ERA across 54 appearances. Jackson has experienced some control issues as he works off rust this spring, however, issuing multiple walks in three appearances. Nevertheless, the 28-year-old impressively managed to avoid any damage until his most recent outing Saturday against the Reds, when he allowed his only three runs of Cactus League play thus far across just one-third of an inning.

MARCH 21, 2023 • ROTOWIRE

Looks ready for spring debut Jackson (shoulder) is listed as an available option out of the Oakland bullpen for Monday's Cactus League game against the Rockies, Matt Kawahara of the San Francisco Chronicle rep...

Impact Jackson closed the 2022 campaign on the injured list with a shoulder strain suffered in early September, but he avoided surgery to address the injury and appears to be back to full strength for spring training. Oakland has yet to formally name a closer for Opening Day, and Jackson should factor into the late-inning mix in some capacity after a strong showing as a rookie a season ago. Over his 54 appearances with the big club spanning 48 innings, the right-hander accrued a 3.00 ERA, 1.27 WHIP and 67:33 K:BB while collecting three saves and 27 holds.

FEBRUARY 27, 2023 • ROTOWIRE

Likely done for season A's manager Mark Kotsay said Tuesday it's unlikely that Jackson (shoulder) will pitch again this season, Martin Gallegos of MLB.com reports.

Impact Jackson has been making progress with his strained right shoulder, the issue is simply that there isn't enough time left in the season for Jackson to come back. The rookie reliever will likely have to wait until 2023 to pitch again following his 3.00 ERA, 1.27 WHIP campaign in 2022.

SEPTEMBER 20, 2022 • ROTOWIRE

Earns third save Jackson recorded a save Wednesday against the Angels, tossing a perfect frame during which he struck out two batters.

Impact Jackson protected a two-run, ninth-inning lead with ease, notching a pair of punchouts and retiring all three batters he faced on 14 pitches. It was a strong bounce-back performance after the right-hander took a loss against the White Sox his last time out. With Lou Trivino now a Yankee, Jackson could be Oakland's closer of choice -- A.J. Puk, who is also in competition for the role, worked the seventh inning and picked up his 14th hold in the contest.

AUGUST 4, 2022 • ROTOWIRE

Takes third loss Saturday Jackson (2-3) took the loss against the White Sox on Saturday, allowing an earned run on a hit and a wild pitch over one-third of an inning.

Impact The normally reliable Jackson was entrusted with preserving a 2-2 tie when he entered in the ninth inning, but he conceded a leadoff double to Gavin Sheets and eventually allowed the winning run to score on a wild pitch while facing Tim Anderson. The stumble was a rare one for the right-hander, who'd last given up an earned run June 23, a span of 14 appearances.

JULY 31, 2022 • ROTOWIRE

Records second save Jackson recorded his second save in a win over the Rangers on Saturday, firing a scoreless ninth inning during which he recorded two strikeouts.

Impact After Sam Moll earned his 10th hold with a strong 1.1-inning performance that served as a bridge to the ninth inning, Jackson took over and disposed of the Rangers on 13 pitches to close out the win. The right-hander has the swing-and-miss stuff to seemingly thrive in high-leverage spots, posting a 12.7 K/9 across what is now an 11-appearance, 10.2-inning stretch during which he hasn't allowed an earned run.

JULY 24, 2022 • ROTOWIRE

Snags another hold in win Jackson recorded his 17th hold in a win over the Astros on Saturday, allowing a hit and recording a strikeout over a scoreless two-thirds of an inning.

Impact One of the Athletics' bullpen's workhorses was at it again Saturday during a game in which five relievers preserved a strong start from rookie Zach Logue. The 27-year-old has been highly reliable during his first taste of the big leagues, with Saturday's outing lowering his ERA to 3.21 and serving as his ninth scoreless appearance in the last 10 trips to the mound.

JULY 10, 2022 • ROTOWIRE

Picks up 13th hold Jackson secured his 13th hold in a win over the Royals on Sunday, firing a scoreless eighth inning during which he issued a walk and recorded two strikeouts.

Impact A day after picking up his second win, Jackson came back to throw a laborious 21-pitch inning that netted him a hold for the fifth time in the last six appearances. Jackson has had a handful of stumbles this season, but he boasts a 12.7 K/9 and 2.82 FIP across 29.2 innings over 32 appearances.

JUNE 27, 2022 • ROTOWIRE

Earns win in relief Jackson (2-2) earned the win Saturday against the Royals. He allowed no runs on no hits while striking out one and walking none over one inning.

Impact Jackson took home the win after a three-up, three-down sixth inning during which he sent down Kansas City's 3-4-5 hitters. He needed only 11 pitches to end the inning. The righty reliever was credited with his second win of the season after being given the loss in his last appearance. Jackson continues to be a reliable arm in the bullpen, though he has only one save on the season.

JUNE 26, 2022 • ROTOWIRE

Takes loss Thursday Jackson (1-2) was charged with two runs on two walks and one strikeout in two-thirds of an inning, taking the loss Thursday versus the Mariners.

Impact After eight innings of two-hit ball from starter Frankie Montas, Jackson ran into trouble in the ninth. He put two batters aboard with walks before A.J. Puk entered the game, and it was Puk who walked two more and threw two wild pitches to allow both inherited runners to score. The loss will go on Jackson's ledger, and both of his defeats this year have been in the only two appearances in which he's allowed multiple runs. The 27-year-old reliever has a 3.90 ERA, 1.48 WHIP and 39:23 K:BB across 27.2 innings, though he's also picked up 12 holds as a high-leverage option in the Athletics' closer committee.

JUNE 23, 2022 • ROTOWIRE

Notches 10th hold Thursday Jackson was credited with his third hold in a loss to the Guardians on Thursday, allowing an earned run on a hit and a walk over one-third of an inning.

Impact Jackson's outing wasn't exactly smooth, but after issuing a walk and allowing a single to the first two batters he faced, he was able to induce a fielder's choice groundout from Myles Straw before exiting. Even though one of the runners Jackson put on eventually scored, the Athletics escaped the frame with a tie, affording the right-hander his 10th hold. While Jackson maintains a solid 3.70 ERA, his WHIP has risen to 1.44 and he's now allowed an earned run in four of his last six appearances.

JUNE 10, 2022 • ROTOWIRE

Up to eight holds Jackson recorded his eighth hold in a win over the Mariners on Tuesday, firing a scoreless eighth inning during which he allowed a hit and a walk while recording a strikeout.

Impact Jackson served as an effective bridge to closer Dany Jimenez in the ninth inning by putting together an eighth straight appearance without allowing an earned run. The right-hander has lowered his ERA from 4.91 to 2.75 in the process while also recording a win and four holds.

MAY 25, 2022 • ROTOWIRE