The Rockies claimed Acton off waivers from the Rays on Thursday.

Acton posted a 3.68 ERA and 1.13 WHIP across 58.2 innings at Triple-A Durham in 2025, which is evidently enough for the Rockies to feel comfortable adding him to a very weak pitching staff. Colorado's lack of depth gives the 27-year-old a decent chance to break spring training with the big club; otherwise, he'll report to Triple-A Albuquerque.

Kelly cleared waivers Wednesday and was sent outright to Triple-A Reno, Alex Weiner of ArizonaSports.com reports.

Kelly spent the vast majority of the 2025 season at Reno, where he finished with a 5.63 ERA and 1.65 WHIP through 115 innings. Now that the 36-year-old righty no longer owns a spot on Arizona's 40-man roster, he may elect free agency and look elsewhere for his next opportunity.

Nelson cleared waivers Wednesday and was outrighted to Triple-A Reno, Alex Weiner of ArizonaSports.com reports.

Nelson appeared in just three games for the D-backs in 2025, giving up two earned runs over two innings. He didn't find much success in the minor leagues either, posting an 8.83 ERA and 1.64 WHIP across 34.2 frames. His poor performance will now cost him his roster spot as the offseason begins, and it's unknown whether he will exercise his right to elect free agency.

Curtiss cleared waivers Wednesday and was sent outright to Triple-A Reno, Alex Weiner of ArizonaSports.com reports.

Curtiss finished the 2025 campaign with a 3.93 ERA and 0.93 WHIP alongside a 24:5 K:BB across 36.2 innings. However, with the Diamondbacks aiming to clear roster space before free agency begins, the 32-year-old righty will lose his place on the 40-man roster. He will have the option to elect free agency.

The Phillies exercised Alvarado's (forearm) club option Wednesday.

As expected, the Phillies have opted to pick up the $9.5 million club option on Alvarado for the 2026 season. He ended the 2025 campaign on the 15-day injured list due to a left forearm strain, and he missed 80 games earlier in the season due to a PED suspension. Across the 28 appearances he made in 2025, Alvarado posted a 3.81 ERA, 1.31 WHIP and seven saves over 26 innings. He'll have the offseason to heal from his injury and will aim to be available for the start of spring training.

The Marlins outrighted Tarnok to Triple-A Jacksonville on Wednesday.

Tarnok has been outrighted previously, so he has the ability to reject Wednesday's outright assignment and become a free agent. The right-hander pitched well during his limited chances in relief with the Marlins in 2025, allowing two runs on just one hit and a 10:4 K:BB over 7.1 innings.

The Marlins outrighted Bellozo to Triple-A Jacksonville on Wednesday.

He's no longer on the 40-man roster, but Bellozo will remain in the organization. The 25-year-old has been used as a swingman in Miami, posting a 4.20 ERA and 98:44 K:BB across 150 innings since the start of the 2024 campaign.

The Marlins activated Zuber (lat) from the 60-day injured list and outrighted him to Triple-A Jacksonville on Wednesday.

Having previously been outrighted, Zuber has the option to elect free agency. The right-hander missed the final month of the regular season with a strained lat, but he should be fully recovered by spring training.

The Marlins activated Tinoco (elbow) from the 60-day injured list and outrighted him to Triple-A Jacksonville on Wednesday.

Tinoco has been outrighted previously, so he has the ability to elect free agency. The right-handed reliever will be sidelined until 2027 after undergoing UCL surgery in September.

The Pirates placed Little on outright waivers Tuesday, Danny Demilio of PittsburghBaseballNow.com reports.

The Pirates claimed Little off waivers from the Dodgers in August, but he never made an appearance for Pittsburgh. He posted a 2.79 ERA and 1.05 WHIP across 19.1 innings at Triple-A Indianapolis, however, which could be enough for another team to give the 27-year-old reliever a 40-man spot early in the offseason.