Jameson (elbow) tossed a scoreless inning of relief Tuesday during an appearance in the Arizona Fall League.

EDGE Analysis

After missing the entire 2024 campaign while recovering from Tommy John surgery, Jameson was back to full health for the start of spring training, but he made just three appearances for Arizona and 16 in the minors before being shut down in late June when he developed a bone fragment chip in his surgically repaired elbow. Though Jameson didn't return to action before the end of the minor-league season, he avoided another procedure on his elbow and looks like he'll be in line for a normal offseason following a stellar relief appearance Tuesday. Jameson needed only eight pitches to retire the side, generating three groundballs while sporting a fastball that topped out at 99.4 miles per hour. Jameson, who maintains a spot on Arizona's 40-man roster, is expected to compete for a bullpen role with the big club this spring.

Diamondbacks manager Torey Lovullo said Sunday that Jameson was pulled off his rehab assignment in the rookie-level Arizona Complex League last week due to a bone fragment chip in his right elbow, Alex Weiner of ArizonaSports.com reports.

EDGE Analysis

Placed on Triple-A Reno's 7-day injured list May 20 due to a lateral right elbow injury, Jameson was cleared to pitch in ACL games in late June but made just two appearances before experiencing tightness in his pitching arm. Fortunately for Jameson, Lovullo relayed that the bone chip in the 28-year-old's elbow isn't expected to require surgery. A timeline for Jameson's return to the mound hasn't been established, however, and given that the righty previously underwent Tommy John surgery in September 2023, Arizona will likely tread carefully with his rehab program.

Jameson underwent an MRI on his right elbow Tuesday after experiencing renewed tightness coming out of his rehab appearance in the rookie-level Arizona Complex League last Friday, Nick Piecoro of The Arizona Republic reports.

EDGE Analysis

Jameson landed on Triple-A Reno's 7-day injured list May 20 due to inflammation in his right elbow, which he previously had surgically repaired in September 2023. After a month of rest and rehab, Jameson was cleared to resumed pitching in games in the ACL last week, but he made just two appearances before suffering a setback. The Diamondbacks haven't revealed the findings of Jameson's recent MRI, but he'll presumably be out of action through at least the All-Star break.

Jameson was placed on the 7-day injured list at Triple-A Reno on Tuesday due to a lateral right elbow issue, Jack Sommers of SI.com reports.

EDGE Analysis

The good news is that the injury is in an area of the elbow unrelated to the UCL, so it's not any sort of setback from last year's Tommy John surgery. Still, Jameson will be shut down for a few weeks before ramping things back up, so he won't be an option for the Diamondbacks for some time.

Jameson was optioned to Triple-A Reno on Monday, Aaron Hughes of SI.com reports.

EDGE Analysis

Jameson appeared in three games during his stint with the big-league club, one of which resulted in his first save April 20 against the Cubs. This move will presumably clear a roster spot for the return of Kevin Ginkel (shoulder) from the 15-day injured list, though the club has yet to officially announce a corresponding move.

Jameson earned a save with a scoreless inning during Sunday's extra-innings win over the Cubs.

EDGE Analysis

Jameson was promoted from Triple-A Reno on Saturday and secured a save in his season debut with the Diamondbacks. It was his first MLB appearance since July 6, 2023 after missing the entire 2024 campaign while recovering from Tommy John surgery. Jameson likely won't see many save opportunities out of Arizona's bullpen.

The Diamondbacks recalled Jameson from Triple-A Reno on Saturday.

EDGE Analysis

Jameson will be joined by J.P. Feyereisen and Juan Morillo in moving to Arizona to replace Joe Mantiply, Bryce Jarvis and the injured A.J. Puk (elbow). Jameson has been effective in seven outings with Reno, giving up two runs on 6.2 innings while punching out 10 batters and walking none.

The Diamondbacks optioned Jameson to Triple-A Reno on Wednesday.

EDGE Analysis

After sitting out the entire 2024 season while recovering from his September 2023 Tommy John surgery, Jameson seemingly operated with no restrictions to begin camp, but having two minor-league options remaining likely worked against him in his bid for the Opening Day roster. Before getting demoted, Jameson made six relief appearances in Cactus League play, giving up one earned run on five hits and three walks while striking out four. He'll work out of the bullpen in Reno and should rank near the top of the list for a call-up early on in the season when Arizona requires an extra relief arm.

Jameson allowed one run on two hits and one walk over one inning of relief in Monday's Cactus League game against the Dodgers.

EDGE Analysis

Jameson worked the second inning of his fourth Cactus League appearance and showed off a triple-digit fastball after missing all of 2024 due to Tommy John elbow surgery. His four-seamer topped out at 101.3 mph and it averaged 97. The right-hander, who allowed his first spring run, continues to make progress and reduced the number of days between outings, per Alex Weiner of Arizona Sports. Jameson is competing for a spot as a reliever and is included in the bullpen of the latest projected roster offered by Steve Gilbert of MLB.com.

Jameson (elbow) is scheduled to make his Cactus League debut in Wednesday's game against the Brewers, Jack Sommers of SI.com reports.

EDGE Analysis

Once starter Corbin Burnes exits the contest, Jameson is on track to make what will be his first appearance at any level since July 6, 2023 after he missed the last season and a half while recovering from Tommy John surgery, which he underwent in September of that year. Jameson progressed to throwing bullpen sessions by the end of last season, and his lengthy rehab program appears to have gone without any snags over the winter and during the early part of spring training. The 27-year-old is in contention for a spot in the Diamondbacks' Opening Day bullpen, but because he has two minor-league options remaining, an assignment to Triple-A Reno could be in the cards if he isn't sharp during his Cactus League appearances.