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Michael Lorenzen SP | COL
Rockies' Michael Lorenzen: Hit hard by Nationals
Lorenzen allowed six runs on seven hits and one walk while striking out five batters over 3.2 innings in a no-decision against Washington on Tuesday.
It was a typical Coors Field contest, as the only inning during which neither team scored was the ninth. Lorenzen had his fair share of bumps, and he was particularly tormented by CJ Abrams, who took him deep twice. However, the right-handed hurler managed to avoid a loss thanks to a big day by Colorado's offense. Lorenzen needed 80 pitches to get through only 3.2 frames, marking the sixth time this season he's failed to complete four innings (though one instance came in his lone relief appearance). He's at an ugly 6.53 ERA on the campaign, though Colorado's lack of other rotation options means Lorenzen probably isn't currently at risk of losing his starting role.
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Walker Buehler SP | SD
Padres' Walker Buehler: Battles control issues in win
Buehler (6-5) earned the win against Atlanta on Tuesday, allowing two runs on two hits and five walks with three strikeouts over 5.2 innings.
Buehler allowed two runs in the second inning but otherwise kept Atlanta in check despite issuing a season-high five walks. It was a much-needed effort from the 31-year-old, who entered Tuesday having surrendered 20 earned runs over his first three July outings. He'll carry a 5.23 ERA, 1.43 WHIP and 84:40 K:BB across 94.2 innings this season into a road matchup with the Marlins this weekend.
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David Peterson SP | CHC
Cubs' David Peterson: Posts best start of season
Peterson (5-7) notched the win over Detroit on Tuesday, allowing three hits and issuing one walk while striking out four batters over 6.2 scoreless innings.
Peterson was sharp, yielding just one extra-base hit and four total baserunners. He retired 11 straight batters in one stretch and completed six frames for the first time this season. Peterson has won two of his four starts since joining Chicago in late June, and he's given up two runs or fewer in three of those outings, though the lone exception was a 10-run, 3.2-inning blowup against St. Louis. The veteran lefty has shown enough to hold down a spot in the rotation at least until some of the Cubs' injured starters get healthy, and he's lined up to make his next start on the road against the Cardinals.
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Aaron Civale RP | CHC
Cubs' Aaron Civale: Yields two runs in 2026 team debut
Civale allowed two runs on four hits across 2.1 innings of relief in Tuesday's 11-2 win over the Tigers. He walked two and struck out two.
After a brief stint with the Cubs last season, Civale made his 2026 team debut in a fairly low-pressure situation, as he entered the game staked to a 9-0 lead. The righty continued his mediocre stretch of play as he saw his ERA climb to 5.49 to go along with a 1.65 WHIP across 77 innings this year. Civale was traded to Chicago on Saturday as some veteran depth, and he's not likely to have a ton of fantasy value the rest of the way.
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Martin Perez SP | ATL
Braves' Martin Perez: Starting Wednesday
Perez (forearm) will start Wednesday's game against the Padres, Mark Bowman of MLB.com reports.
Manager Walt Weiss said Saturday that Perez was set to make his return from the injured list during Atlanta's series against San Diego, and the 35-year-old southpaw is now officially set to make his second-half debut Wednesday after landing on the injured list July 6 with a bruised forearm. He will be returning to the rotation having bypassed a rehab assignment, so there's a chance the team limits his workload as he makes his first start back from the IL.
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Gerardo Carrillo RP | ARI
Diamondbacks' Gerardo Carrillo: Recalled to majors
The Diamondbacks recalled Carrillo from Triple-A Reno on Tuesday.
Carrillo was added to Arizona's 40-man roster Saturday, and he'll now get an opportunity to pitch for the big club following Drey Jameson's (hip) move to the injured list. Carrillo has put up a 4.15 ERA, 1.32 WHIP and 57:28 K:BB across 43.1 innings at Reno, and he'll be making his MLB debut whenever he gets into a game.
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Hunter Dobbins SP | STL
Cardinals' Hunter Dobbins: Expected to be called up Wednesday
Cardinals manager Oliver Marmol said that Dobbins is expected to be called up from Triple-A Memphis to start Wednesday's contest against the Angels, Daniel Guerrero of the St. Louis Post-Dispatch reports.
Dobbins will return to the big-league roster after being sent down July 8. The right-hander has posted a 4.03 ERA and 1.39 WHIP with 23 strikeouts over 22.1 innings in five appearances (three starts) with the Cardinals so far this season. With Dobbins coming up for a spot start, the other members of the St. Louis rotation will all be pushed back a day in the pitching schedule.
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Mitch Keller SP | PIT
Pirates' Mitch Keller: Pitching Game 1 of doubleheader
Keller will start Game 1 of Wednesday's doubleheader against the Yankees, Colin Beazley of the Pittsburgh Post-Gazette reports.
Keller will take the ball in Wednesday's matinee after Tuesday's contest was postponed due to inclement weather, causing the Pirates to participate in a third doubleheader since July 11. The right-hander has struggled to a 7.62 ERA and 1.74 WHIP with 31 strikeouts over 39 innings in his last eight starts, surrendering nine home runs over that stretch.
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Bubba Chandler SP | PIT
Pirates' Bubba Chandler: Starting Game 2 of doubleheader
Chandler will start Game 2 of Wednesday's doubleheader against the Yankees, Colin Beazley of the Pittsburgh Post-Gazette reports.
Chandler was set to start Tuesday before the game ended up being postponed due to poor weather, but he'll now handle Wednesday's nightcap. The right-hander has struggled to a 6.60 ERA and 1.80 WHIP with nine walks and 12 strikeouts over 15 innings in his last three starts.
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Zac Gallen SP | ARI
Diamondbacks' Zac Gallen: Received second opinion
Gallen (elbow) met with Dr. Neal ElAttrache in Los Angeles for a recommended course of action and was scheduled to be back in Arizona on Tuesday to resume his rehab, John Gambadoro of Arizona Sports 98.7 FM reports.
Gallen has been dealing with right elbow inflammation, which landed him on the 15-day injured list July 12. The righty was said to be evaluating his options as he waited for an opinion from another doctor -- presumably Dr. ElAttrache. Gallen's timeline is currently up in the air.