Wheeler (shoulder) is scheduled to throw three innings and/or 50 pitches in Saturday's rehab start with Triple-A Lehigh Valley, Corey Seidman of PHLY Sports reports.

It will be Wheeler's first official game action since last September's venous thoracic outlet syndrome surgery. The Phillies will likely want Wheeler to get his pitch count up to the 80-to-90 range before clearing him for his season debut, so the right-hander will likely make two additional rehab starts after Saturday before returning in mid-April if all goes well.

Phillips will begin the season as part of the Marlins' bullpen, Christina De Nicola of MLB.com reports.

The 28-year-old righty produced a 1.13 ERA and 9:5 K:BB in eight innings this spring to secure his spot. Phillips figures to fill a middle-relief role after posting a 2.78 ERA, 1.15 WHIP and 52:24 K:BB over 77.2 innings last season with two wins, four saves and eight holds in 54 appearances for Miami.

The Padres placed Waldron (lower body) on the 15-day injured list Wednesday.

Waldron, who underwent hemorrhoid surgery in late February, is still in the process of getting built back up again and isn't expected to be ready to return from the IL until around mid-April at the earliest, per MLB.com. Waldron was able to pitch in two Cactus League games before the end of spring training, so he could be cleared to head out on a rehab assignment with Triple-A El Paso in the near future.

The Blue Jays announced Wednesday that Miles won a spot in the Opening Day bullpen.

A Rule 5 pick out of the Giants system, Miles has yet to pitch above the Single-A level and didn't take the mound at all in 2025 while he recovered from Tommy John surgery. The 25-year-old right-hander showed enough this spring to stick on the 26-man active roster, however, posting a 3.72 ERA and 11:5 K:BB in 9.2 innings and topping out at 98.1 miles per hour with his sinker in his final spring outing. Miles will begin his big-league career in a low-leverage role, but his premium velocity could allow him to move up the depth chart if he shows he can harness it effectively.

The Diamondbacks announced March 6 that Elbis retired from professional baseball.

After posting a 3.39 ERA, 1.19 WHIP and 112:47 K:BB in 135.1 innings between High-A Hillsboro and Double-A Amarillo in 2024, Elbis was added to the Diamondbacks' 40-man roster following that season. Arizona then optioned Elbis to Double-A last March, but the right-hander didn't end up making any appearances in 2025 after initially landing on Amarillo's injured list last April before being shifted to the restricted list less than two weeks later. Elbis was activated from the restricted list following the season, but the 23-year-old didn't report to spring training before electing to bring an end to his playing career.

Castillo is slated to make his first start during the Mariners' fifth game of the season Monday versus the Yankees at T-Mobile Park, Adam Jude of The Seattle Times reports.

Emerson Hancock is the Mariners' de facto fifth starter while stepping into the rotation in place of the injured Bryce Miller (oblique), but he'll end up taking the hill for Seattle's fourth game Sunday versus Cleveland while Castillo moves to the back of the schedule. The rotation setup is likely just a means to get Castillo some extra rest after he started the Mariners' spring training finale Monday in San Diego. Castillo covered five innings and tossed 76 pitches in that outing, so he should be ready to handle a relatively normal workload in his 2026 debut.

Fried (1-0) allowed two hits and a walk while striking out four over 6.1 shutout innings to earn the win over the Giants on Wednesday.

The Yankees' second-inning surge on offense was more than enough help for Fried, who looked sharp in the season opener. The southpaw had a 4.40 ERA over 14.1 innings during spring training, but he got on track for the first game that counts. Fried was strong in 2025 with a 2.86 ERA, 1.10 WHIP and 189:51 K:BB over 195.1 innings across 32 regular-season starts and should be the clear ace in the Yankees' rotation until Gerrit Cole (elbow) is able to make his season debut. Fried is tentatively projected to make his second start of the season in Seattle next week, which would be the first of a two-start week as the Yankees are projected to use a four-man rotation to begin the year.

Webb (0-1) took the loss versus the Yankees on Wednesday, allowing seven runs (six earned) on nine hits and a walk while striking out seven over five innings.

Webb was roughed up for five runs in the second inning and gave up two more in the fifth before exiting the game. He threw 58 of 86 pitches for strikes, which was right in line with his workload in his last Cactus League start Thursday. The right-hander is a true workhorse for the Giants, having topped 200 innings in three straight years and 30 starts in each of the last four campaigns. He pitched to a 3.22 ERA, 1.24 WHIP and 224:46 K:BB over 207 innings in 2025 and should continue to eat innings with strong ratios again this season. Webb is tentatively projected to make his second start of the year on the road at San Diego next week.

Rea will make Chicago's Opening Day roster as a long reliever, Jordan Bastian of MLB.com reports.

With Cade Horton staking his claim to a rotation spot after an impressive rookie season and Edward Cabrera joining the Cubs via trade, Rea ultimately got pushed to the bullpen. The veteran righty made 27 starts for Chicago during the 2025 regular season, but he'll now slot in as a long reliever capable of supplying multiple innings out of the bullpen. Rea's fantasy value takes a hit in this role, though he certainly could still make some spot starts throughout the year.

San Diego placed Musgrove (elbow) on the 15-day injured list Wednesday.

After undergoing Tommy John surgery in October 2024, Musgrove missed the entire 2025 season but received full clearance ahead of spring training. However, after Musgrove experienced inflammation in his surgically repaired elbow following an exhibition versus Team Great Britain on March 4, the Padres have elected to tread carefully with the veteran righty. Musgrove has remained shut down from throwing for just over two weeks, but the San Diego brass has continued to downplay concern about his elbow issue, noting that some speed bumps were expected coming off the major surgery. While Musgrove is on the shelf, the Padres will turn to Walker Buehler to fill out their rotation.