Miller (forearm) threw 16 pitches to live hitters Tuesday, but the session was cut short when his lower back tightened up, Alex Weiner of ArizonaSports.com reports.

Miller has been working his way back from a right forearm strain, throwing a bullpen session Saturday before facing live hitters Tuesday. The right-hander's arm felt good, but with the back issue popping up, the team opted to play it safe with Miller. The team will reportedly see how he's feeling Wednesday and go from there with his recovery plan.

The Astros recalled Hernandez from Triple-A Sugar Land on Tuesday.

With Lance McCullers (finger) headed to the injured list, Hernandez will rejoin the Astros' bullpen to give the Astros an extra relief option. The 27-year-old righty has given up two runs in two MLB innings this year, but he owns an impressive 1.70 ERA and 0.97 WHIP through 37 frames in the minors.

The Phillies recalled Rangel from Triple-A Lehigh Valley on Tuesday, Lochlahn March of The Philadelphia Inquirer reports.

Since his demotion to Triple-A in late June, Rangel has posted a 3.86 ERA and 1.35 WHIP alongside a 17:8 K:BB through 16.1 innings. He'll now rejoin the Phillies' pitching staff as a replacement for the injured Joe Ross (back) and presumably take on a long-relief role.

The Phillies placed Ross on the 15-day injured list Tuesday with back spasms, Lochlahn March of The Philadelphia Inquirer reports.

Ross has appeared in four games this month, giving up four earned runs over 6.1 innings while striking out five batters and walking two. He'll now remain sidelined until at least Aug. 6, and the Phillies will recall Alan Rangel from Triple-A to fill the open spot in their bullpen.

The Brewers sent Zastryzny (ribs) to Triple-A Nashville to begin a rehab assignment Tuesday, Jack Stern of BrewerFanatic.com reports.

Zastryzny has been on IL for the entirety of the month due to a ribs stress reaction. With his rehab assignment imminent, he may have a chance to be activated before the end of July.

Thomas had surgery Wednesday to remove bone spurs and repair his UCL with an internal-brace procedure, Jack Stern of BrewerFanatic.com reports.

Thomas is likely looking at a return timeline of the first half of the 2026 season in a best-case scenario. The Rule 5 draft pick made just two appearances -- the first of his MLB career -- before being shut down, allowing 12 earned runs on 12 hits over 5.1 innings.

The Royals optioned Hoffmann to Triple-A Omaha on Tuesday.

Hoffmann was called up by Kansas City on Friday and appeared in two games during his brief time in the majors, allowing four runs (none earned) with a 1:4 K:BB over 2.2 innings. The 25-year-old will now head back to Omaha, where he has a 2.31 ERA and 1.13 WHIP in 31 outings this season.

The Padres optioned Hoeing to Triple-A El Paso on Tuesday.

Hoeing has yielded three runs with a 5:3 K:BB over eight frames since returning from a shoulder injury. He was a key reliever for the Padres last season and should be back up with the big club before long.

The Padres optioned Jacob to Triple-A El Paso on Tuesday.

The right-hander was called up by San Diego on July 12 and appeared in just one game during his time with the big club, as he covered two scoreless frames Sunday in Washington. It's otherwise been a struggle for Jacob in the majors this season with a 6.39 ERA, 1.70 WHIP and 19:10 K:BB over 25.1 innings.

The White Sox optioned Gonzalez to Triple-A Charlotte on Tuesday.

The right-hander was called up by Chicago over the weekend but will head back to Charlotte with Davis Martin (forearm) returning from the injured list to start Tuesday in Tampa Bay. Gonzalez has appeared in three games for the White Sox this season and allowed two earned runs with a 5:4 K:BB over five innings.