Houck was returned from his minor-league rehab assignment Saturday due to a recurrence of a right pronator strain, Ian Browne of MLB.com reports.

Houck was first diagnosed with a right pronator strain in mid-May, and he subsequently landed on the 15-day injured list. The right-hander kicked off a minor-league rehab stint about a month later and pitched in five games, posting a 5.74 ERA, 1.53 WHIP and 15:6 K:BB over 15.2 innings between Double-A Portland and Triple-A Worcester. There had been optimism that Houck was close to being activated, but the setback means he'll likely be out for another significant chunk of time.

Martin (forearm) is expected to be activated from the injured list within the next week, MLB.com reports.

Martin completed 3.2 innings in his last rehab outing with Triple-A Charlotte and looked sharp by allowing only one earned run with a 5:1 K:BB. It's unclear exactly what day he will return to the big-league club, but he isn't listed as Charlotte's probable starter Sunday.

Perez (elbow) threw a bullpen session Saturday, MLB.com reports.

Perez has been sidelined since mid-April but has been engaging in bullpen sessions since early July. It's unclear exactly when he'll begin a rehab assignment, but it appears he could be lining up for a return in the second half of August.

Warren did not factor into the decision Saturday, allowing five runs on five hits and three walks over 3.2 innings against Atlanta. He struck out five.

The right-hander didn't make it out of the fourth inning Saturday, giving up home runs to Michael Harris and Ozzie Albies in the process. Warren came into the outing with solid underlying metrics (3.40 FIP) despite a 4.63 ERA, but this performance didn't offer signs of positive regression. Through 99 innings this season, the 26-year-old now holds a 4.91 ERA and 1.44 WHIP across 21 starts.

Houser did not factor into the decision in Saturday's 10-4 win over the Pirates, allowing four runs (three earned) on 10 hits and one walk with five strikeouts over 4.1 innings.

Houser yielded a season-high 10 hits while generating only four swinging strikes and failing to complete five innings for the first time in 10 starts this year. It snapped a streak of four consecutive quality starts for the 32-year-old, though he's still allowed three earned runs or fewer in each of his outings. He'll carry a 1.89 ERA, 1.23 WHIP and 44:19 K:BB across 62 innings into a tough matchup with the Cubs next weekend.

Eovaldi has been scratched from his scheduled start Sunday versus Detroit due to tightness in his back, Kennedi Landry of MLB.com reports.

Sunday was slated to be a marquee pitching matchup between Eovaldi and the Tigers' Tarik Skubal, but that duel won't happen. Instead, the Rangers have tabbed Jacob Latz to start opposite Detroit's ace. Eovaldi had an IL stint in June due to a triceps injury, and he has made four starts since being activated June 27. It's not yet clear if another trip to the injured list could be on the table for Eovaldi due to the back issue.

Wacha came away with a no-decision in Saturday's 3-1 loss to the Marlins, allowing one run on three hits and a walk over six innings. He struck out one.

The veteran righty was actually in line for a 1-0 loss until the Royals pushed across the tying run in the top of the eighth inning. Wacha produced his ninth quality start of the season on 78 pitches (51 strikes), but he's struggled to provide much consistency since the beginning of June, posting a 4.78 ERA, 1.36 WHIP and 35:16 K:BB over his last 43.1 innings, which has resulted in a 1-5 record. He'll try to get back in the win column in his next start, which lines up to come at home next weekend against the Guardians.

Kikuchi did not factor into the decision in Saturday's 9-5 loss to the Phillies, allowing two runs on five hits and three walks with eight strikeouts over five innings.

Kikuchi allowed runs in the first and fifth innings before departing at 91 pitches. The southpaw allowed just three hard-hit balls and generated a whopping 19 whiffs, including 10 on his fastball, but he's now failed to deliver a quality start in any of his four July outings. He'll take a 3.13 ERA, 1.38 WHIP and 123:52 K:BB across 118 innings into a home matchup with the Mariners next week.

Lauer (5-2) picked up the win in Saturday's 6-3 victory over the Giants, allowing two runs on two hits over six innings. He struck out seven without walking a batter.

The southpaw continues to impress at the back of the Blue Jays' rotation. Lauer produced his second quality start of the season on 81 pitches (58 strikes), and he's given up more than two runs in only two of 15 appearances. He'll take a 2.80 ERA, 0.97 WHIP and 65:16 K:BB through 61 innings into his next start, which is scheduled to come on the road next week in Detroit.

Fitts is scheduled to start Tuesday's road game in Philadelphia, Christopher Smith of MassLive.com reports.

After Hunter Dobbins (knee) was ruled out for the season due to a torn ACL, Fitts was called up from Triple-A Worchester on July 12 to fill his spot on the active roster. Fitts went unused out of the bullpen in Boston's final two games before the All-Star break, but he'll assume Dobbins' spot in the rotation to begin the second half. The right-hander could end up being in line for an extended stay in the rotation, as Tanner Houck (elbow) suffered a setback during his rehab assignment and now seemingly isn't a candidate to return from the injured list anytime soon.