The Diamondbacks reassigned Dubin to minor-league camp Thursday, Alex D'Agostino of SI.com reports.

Dubin had been attending camp as a non-roster invitee and was unable to secure a spot in Arizona's Opening Day bullpen after giving up four runs (two earned) on four hits and three walks over five innings in Cactus League play. The 30-year-old righty spent the 2025 season in the Astros and Orioles organizations, making 30 appearances in the majors while pitching to a 5.08 ERA, 1.43 WHIP and 28:11 K:BB across 33.2 frames.

The Diamondbacks reassigned Campbell to minor-league camp Thursday, Alex D'Agostino of SI.com reports.

Plenty of spots in Arizona's Opening Day bullpen were up for grabs in spring training, but Campbell was unable to seize one despite allowing just two baserunners over five innings across six Cactus League appearances. Campbell saw big-league action in each of the past three seasons but is slated to begin the 2026 campaign at Triple-A Reno.

The Cardinals optioned Fernandez to Triple-A Memphis on Sunday.

The right-hander made 32 relief appearances for St. Louis last year but struggled to a 7.71 ERA and 1.71 WHIP in 30.1 innings. Fernandez wasn't any better during spring training with eight runs allowed and a 7:5 K:BB across six frames, so he'll begin 2026 at Triple-A.

Sandlin (elbow) is listed among the Angels' available relievers for Sunday's Cactus League game against the Rockies, Jeff Fletcher of The Orange County Register reports.

The Angels haven't confirmed that Sandlin will pitch Sunday, but his inclusion on the lineup card nonetheless indicates that he's fully ramped back up after he was eased along during the first few weeks of spring training while he recovered from an offseason arthroscopic procedure on his right elbow. Since he's attending camp as a non-roster invitee, Sandlin likely won't have sufficient time to stake a claim to a spot in the Angels' Opening Day bullpen, but he could put himself in the mix for an early call-up if he pitches effectively at Triple-A Salt Lake to begin the season.

The Rangers outrighted Diaz to Triple-A Round Rock on Sunday.

After signing a one-year deal with Texas in December, Diaz entered spring training with a chance to stake his claim to the closer job in an unsettled bullpen. The right-hander's lack of command during spring training ultimately resulted in him not only falling short of a high-leverage role, but a spot on the 40-man roster. He'll remain in the Texas organization after drawing no interest on the waiver wire, having yielded eight earned runs on three hits and four walks over 1.2 innings in the Cactus League.

The Mariners reassigned Rucker to minor-league camp Sunday.

After sitting out the entire 2025 season, Rucker signed a minor-league deal with the Mariners in January and had been attending camp as a non-roster invitee. He's expected to open the upcoming campaign at Triple-A Tacoma and will serve as bullpen depth. The 31-year-old previously saw big-league action with the Cubs in 2021-23, logging a 4.96 ERA and 1.39 WHIP over 123.1 innings across 96 regular-season relief appearances.

Fulmer (elbow) struck out a batter over two perfect innings of relief Friday in the Pirates' 7-5 win over the Tigers in Grapefruit League play.

Fulmer was making his first appearance of the spring, after he had been delayed due to his late signing in addition to completing his recovery from a right elbow strain that caused him to close last season on the shelf. Since the right-hander is attending camp as a non-roster invitee, he'll be facing an uphill battle to win a spot in the Opening Day bullpen, but he put a strong foot forward Friday.

The Phillies reassigned Mercado (shoulder) to minor-league camp Thursday, Todd Zolecki of MLB.com reports.

Mercado made three appearances out of the Philadelphia bullpen in 2025, but a right shoulder injury prevented him from making any Grapefruit League appearances and will end his bid for an Opening Day roster spot. The Phillies haven't shed much light regarding where Mercado stands in his throwing program, making it unclear if he'll be ready for the start of the minor-league season.

The Mets reassigned Edwards to minor-league camp Sunday.

Edwards, who made four appearances in the big leagues last season between the Angels and Rangers, had been attending camp as a non-roster invitee. He was impressive with 11 strikeouts in 8.2 innings while holding hitters to a .103 batting average, but the Mets didn't have a spot available for him in their Opening Day bullpen.

The Diamondbacks reassigned Curtiss to minor-league camp Sunday, Alex Weiner of ArizonaSports.com reports.

Curtiss appears set to begin the season in the bullpen at Triple-A Reno after he was touched up for three earned runs on five hits and two walks over 5.2 innings in Cactus League play. The 32-year-old righty could earn another look in the majors if he can rediscover the form he displayed last season across two stints with Arizona last year, when he collected four holds and accrued a 3.93 ERA, 0.93 WHIP and 24:5 K:BB in 36.2 innings.