The Padres optioned Waldron to Triple-A El Paso on Wednesday.

EDGE Analysis

Waldron will head back to the minors after he permitted four runs over 4.2 innings Monday while taking a loss in a spot start versus the Phillies. San Diego called up right-hander Eduarniel Nunez to replace Waldron on the 26-man active roster.

The Padres are expected to option Waldron to Triple-A El Paso on Wednesday, Kevin Acee of The San Diego Union-Tribune reports.

EDGE Analysis

Waldron will be the roster casualty necessary to make room for Eduarniel Nunez, who is set to be selected from El Paso on Wednesday. Waldron struggled mightily during his season debut Monday, during which he gave up four runs in 4.2 innings, and he's put up a 5.24 ERA and 1.54 WHIP through 22.1 frames in Triple-A.

Waldron (0-1) suffered the loss in Monday's contest at Philadelphia, conceding four runs on six hits and six walks over 4.2 innings with three strikeouts.

EDGE Analysis

Waldron's season debut was absolutely disastrous as the knuckleballer issued a career-worst six free passes (his previous worst was four). Despite the avalanche of walks, the San Diego right-hander managed to limit the Phillies lineup to just one extra-base hit -- a Nick Castellanos solo homer in the fifth -- across his 104 pitches. Waldron hadn't been particularly sharp at Triple-A before his callup, pitching to a 5.04 ERA across 30.1 frames, but could stay with the big-league team as San Diego starting pitchers Ryan Bergert (forearm), Yu Darvish (elbow), Michael King (shoulder), and Joe Musgrove (elbow) are on the injured list. If Waldron continues to stick in the rotation, his next turn is scheduled to come against the Rangers at home this weekend.

The Padres recalled Waldron from Triple-A El Paso on Monday.

EDGE Analysis

Waldron will start Monday's game in Philadelphia and could be needed for multiple turns in the rotation as the Padres navigate through injuries to their other starting pitchers. The knuckleballer has missed time himself in 2025 with an oblique strain, and in five starts with El Paso, he turned in a 5.24 ERA, 1.52 WHIP and 22:7 K:BB in 22.1 innings.

The Padres will call up Waldron from Triple-A El Paso to start Monday's game in Philadelphia, Kevin Acee of The San Diego Union-Tribune reports.

EDGE Analysis

After making 26 starts for the Padres in 2024, Waldron will be joining the Padres for the first time this season. He spent the early part of the season on the injured list while recovering from an oblique strain, but he's been making regular turns out of the Triple-A rotation since late May and owns a 5.24 ERA, 1.52 WHIP and 22:7 K:BB in 22.1 innings with El Paso. While those numbers don't necessarily make the knuckleballer deserving of a promotion, the Padres were short on alternatives to fill the fifth spot in the rotation due to Ryan Bergert (forearm) recently joining Yu Darvish (elbow), Michael King (shoulder) and Joe Musgrove (elbow) on the injured list. Darvish is the closest of that quartet to returning from the IL, but since his timetable is still somewhat vague, Waldron could be needed to make multiple turns through the rotation before the All-Star break.

Waldron (oblique) was activated from the 60-day injured list and optioned to Triple-A El Paso on Sunday, Kevin Acee of The San Diego Union-Tribune reports.

EDGE Analysis

Waldron has missed the entire 2025 campaign to this point while recovering from a left oblique strain, but he'll now officially be back in action. The right-hander made three appearances with three different levels of San Diego's minor-league system during his rehab assignment, most recently allowing three runs on seven hits and three walks while striking out six over four innings with El Paso on Friday. Waldron produced a 4.91 ERA and 1.26 WHIP with 133 strikeouts over 27 appearances, including 26 starts, with the Padres in 2024, and he'll likely return to the major-league roster before too long.

Waldron (oblique) allowed two earned runs on five hits and one walk while striking out four batters across 4.1 innings in his rehab start Sunday with Double-A San Antonio.

EDGE Analysis

Waldron has been on the shelf all season after straining his left oblique while warming up in the bullpen during a Cactus League game in mid-March. He's been steadily building up since beginning his rehab assignment in the rookie-level Arizona Complex League on May 15, as he's made his subsequent two starts at San Antonio while tossing two and 4.1 innings. During Sunday's outing, Waldron tossed 61 pitches (37 strikes), but the Padres will likely want to see him move his pitch count up to around 75 during his rehab assignment before bringing him back from the injured list. San Diego could have an opening in the rotation for Waldron once he's activated, as he appears on pace to beat Yu Darvish (elbow) and Michael King (shoulder) back from the IL.

Waldron (oblique) began a rehab assignment in the Arizona Complex League on Thursday, Jeff Sanders of The San Diego Union-Tribune reports.

EDGE Analysis

Waldron suffered an oblique strain in mid-March but returned to the mound Thursday. He allowed one earned run on two hits and a walk while striking out three across 1.2 frames. Waldron threw a total of 38 pitches, so he'll likely need a few more appearances before being activated.

The Padres transferred Waldron (oblique) to the 60-day injured list Friday.

EDGE Analysis

Waldron has been on the injured list all season due to a strained left oblique, and his move to the 60-day IL will ensure he remains out until at least late May. His roster spot will be filled by Tyler Wade, who was selected from Triple-A to replace the injured Jake Cronenworth (rib).

The Padres placed Waldron (oblique) on the 15-day injured list Thursday.

EDGE Analysis

Waldron has yet to resume a throwing program since suffering a left oblique strain while warming up in the bullpen March 14. He'll require more than the minimum 15 days to heal from the injury, and with Yu Darvish (elbow) joining him on the shelf to begin the season, the Padres will have room in the rotation for both Kyle Hart and Randy Vasquez, who had been competing with Waldron for the No. 5 starter role.