Red Sox manager Alex Cora said Friday that Hendriks (elbow) will throw a bullpen session Friday or Saturday, Gabrielle Starr of the Boston Herald reports.

It will be the first time Hendriks has thrown off a mound since he landed on the 15-day injured list with right elbow inflammation. Hendriks will be eligible for activation April 8, but given that he's just now getting back on the bump, he's unlikely to return at that time.

The Yankees activated Williams from the paternity leave list Friday.

Williams missed this week's three-game series against the Diamondbacks while welcoming a new addition to his family. He'll be available to close as the Yankees begin a series in Pittsburgh this weekend.

Whitlock allowed one run on one hit and one walk while striking out three over two innings in Thursday's 8-4 win over Baltimore.

Whitlock finished up the final two innings, and all three of his outings to start the season have lasted two frames. That was the blueprint Red Sox manager Alex Cora set for the right-hander during spring training; when possible, Whitlock would throw two innings every time he pitched. He's allowed just the one run through six innings while striking out six and walking one.

Weaver picked up the save after not allowing a baserunner in 1.1 innings Thursday against Arizona. He struck out one.

The Yankees got out to a massive 9-3 lead Thursday, but the Diamondbacks made the game interesting with a four-run surge in the seventh inning. That prompted manager Aaron Boone to turn to one of his high-leverage arms, and Weaver locked down his first save of the campaign while pouring in 15 of his 19 pitches for strikes. Although the right-hander is not the team's first option in save situations due to the arrival of Devin Williams (personal), Weaver emerged as a major weapon out of New York's bullpen in the second half of last season and should still see some save chances in 2025.

Hader picked up the save in Thursday's 5-2 win over Minnesota, striking out one in a perfect ninth inning.

Hader is now 3-for-3 in save opportunities to start the year -- he's allowed one run while striking out three over three innings. The left-hander remains one of the top ninth-inning options in the league after logging 34 saves while posting a 3.80 ERA with a 0.96 WHIP and 105 strikeouts across 71 regular-season innings last year.

Castillo is expected to be promoted from Triple-A Tacoma to start against the Giants on Friday, Adam Jude of The Seattle Times reports.

Not to be confused with the Luis Castillo already in Seattle's big-league rotation, this 30-year-old righty made his MLB debut with the Tigers in 2022 and threw 3.2 shutout frames while striking out four batters across three relief appearances. He then spent the next two seasons in Japan and is now slated to make his first career start in the majors. A strong showing Friday could buy the lesser-known Castillo another turn through the rotation while the Mariners await George Kirby's (shoulder) return from the IL.

The Mariners optioned Diaz to Triple-A Tacoma on Wednesday.

Diaz made his one appearance for Seattle on Tuesday and allowed no runs on one hit with a strikeout in 1.1 innings. The southpaw has made the bulk of his appearances for Tacoma as a starter and figured to get a shot at securing a rotation spot in place of the injured George Kirby (shoulder), but he'll instead return to the minors after a relief appearance. Luis F. Castillo is expected to be promoted from Triple-A Tacoma to make his first career start Friday.

Yankees manager Aaron Boone said Thursday that Williams (personal) will be activated from the paternity leave list Friday, Jorge Castillo of ESPN.com reports.

Williams will miss a third straight game Thursday while tending to more important family matters, but he will be back to resume closer duties for the weekend series in Pittsburgh. The 30-year-old gave up one run but recorded a save in his lone appearance this season.

Taylor will begin the season with Double-A Birmingham, Jim Callis of MLB Pipeline reports.

Taylor will join Noah Schultz and Hagen Smith in one of the most loaded rotations in the minors after impressing this spring. Taylor has a chance for three plus pitches and plus command, so if he stays healthy, he could be one of the year's top breakout pitching prospects. He had Tommy John surgery at LSU and had a 2.33 ERA, 0.72 WHIP and 32 strikeouts in 19.1 innings last season, although he missed more time with a lat injury.

Langevin is on the 60-day injured list due to a lat strain, Sam Dykstra of MLB Pipeline reports.

He is listed as being on the Arizona Complex League Royals roster, but once healthy, the 21-year-old righty will probably be assigned to a full-season affiliate. Langevin was Kansas City's fourth-round pick last year and has one of the best fastballs in the system -- a mid-90s offering with elite movement -- but the rest of his pitches need refinement.