The Dodgers rotation did more than lose a game Sunday. It exposed the Dodgers rotation shortage beneath baseball’s deepest and most expensive roster. When Emmet Sheehan failed to finish five innings against Boston, the damage stretched beyond the scoreboard. As each at-bat dragged on, his mechanics unspooled. His fastball lost its shape, and the bullpen door opened far earlier than Dave Roberts wanted.
Now Los Angeles heads to Wrigley Field after a 2-4 homestand and a sweep by the Red Sox. The Dodgers still hold a comfortable 10-game division lead at 69-43, but those numbers offer false security. Chicago will not care about the standings once the wind starts pushing balls toward Waveland Avenue.
Wrigley compounds every rotation problem. Shifting gusts turn routine fly balls into bleacher souvenirs, while deep counts force managers into uncomfortable decisions. The immediate concern feels painfully clear: Can the Dodgers get enough innings from five healthy starters to protect a bullpen already carrying too much of the summer?
Dodgers Rotation Shortage: Injuries Erase LA’s Margin
Los Angeles opened 2026 with enough starting pitchers to make most front offices jealous. Shohei Ohtani, Yoshinobu Yamamoto, Blake Snell, Tyler Glasnow, Roki Sasaki, and Sheehan gave Roberts power, movement, and multiple October combinations. On paper, the Dodgers rotation looked almost excessive.
Injuries quickly decimated that depth. MLB.com reported that Snell landed on the injured list with loose bodies in his left elbow. Glasnow went down with lower-back spasms, while a Shohei Ohtani injury forced the two-way star to pause his pitching work.
A six-inning outing protects more than the scoreboard. It keeps Evan Phillips, Alex Vesia, and Tanner Scott available for the matchups Roberts actually wants. On the other hand, a short start can damage the next two nights. One reliever covers the fifth inning, another works on consecutive days, and Roberts may need his fourth-best option against Chicago’s best hitters by the finale.
Four Starters Face the Dodgers Rotation Shortage
The problem does not come from one broken arm. Los Angeles has several pitchers occupying different points between dominance and doubt. Each must solve a different issue before Roberts can trust the rotation under postseason pressure.
Emmet Sheehan’s Delivery Struggles Highlight the Dodgers Rotation Shortage
Sheehan represents everything wrong, and everything fixable, with the rotation right now. MLB.com listed his ERA at 5.29 through 20 starts following the Boston loss. Yet his pitches still generated 12 swings and misses during that abbreviated outing. The raw material remains visible.
His delivery creates the trouble. As Sheehan tires, his fastball velocity fluctuates and his release point drifts. The pitch then leaks toward the middle instead of climbing above the barrel. Breaking balls follow the same pattern, spinning over the plate rather than finishing below the knees.
Chicago’s hitters will not flinch at 98 mph high heat if it misses the zone on 2-0 counts. They will wait for the next fastball, shorten their swings, and drive it toward the gaps. Still, Sheehan owns a credible baseline. During his 15-game 2025 return from Tommy John surgery, he recorded a 2.82 ERA across 73⅓ innings. Twelve of those appearances came as starts.
That version attacked sooner. He also posted a 0.97 WHIP and a 30.6% strikeout rate, according to MLB.com’s review of his comeback season. Sheehan does not need another pitch. He needs the delivery that made his existing pitches play.
Roki Sasaki Adapts to Ease the Dodgers Rotation Shortage
Sasaki offers a better picture of what adjustment can accomplish. The right-hander allowed only three earned runs across his previous 18 innings, producing a 1.50 ERA over three starts. More importantly, he stopped wasting pitches before reaching two strikes.
By eliminating noncompetitive offerings, Sasaki started cruising into the sixth inning. Hitters saw fewer comfortable 2-0 and 3-1 counts, while his splitter became harder to dismiss. Baseball Savant tracking shows why location matters so much for his arsenal. The splitter creates ugly swings when it begins near the lower edge. Leave it higher, and the pitch loses much of its deception.
That distinction will decide whether Sasaki becomes a dependable postseason starter or another electric arm Roberts must remove early. His recent efficiency offers encouragement, but three strong outings cannot erase a season’s volatility.
Justin Wrobleski Must Stabilize the Opener
Justin Wrobleski brings the cleanest recent body of work among the available starters. MLB.com’s rotation series preview listed the left-hander with a 2.88 ERA through 18 appearances, including 17 starts. Although Seattle scored five runs during his previous outing, Wrobleski still completed six innings.
That final number matters. He also faced Chicago in April and delivered six scoreless frames with six strikeouts. His fastball disrupted the Cubs above the zone, while his breaking ball prevented right-handed hitters from leaning over the plate.
However, Chicago now owns months of additional video. Wrobleski cannot simply repeat the April plan and expect the same result. The left-hander must establish the inside edge early. If he lets the Cubs crowd the plate, their hitters can ignore half the strike zone and wait for something moving toward their barrels.
Tarik Skubal Arrives as the Emergency Upgrade
The Tarik Skubal trade changed the ceiling of this pitching staff one day before the series. On August 2, Los Angeles acquired the two-time defending American League Cy Young Award winner from Detroit. The Tigers received outfielder Zyhir Hope and right-handers River Ryan and Brady Smith.
That represents a serious prospect cost. It also reflects how urgently the Dodgers viewed their rotation shortage. Skubal arrives with a 2.79 ERA, 116 strikeouts, and 96⅔ innings this season. During July, he struck out 41 batters across 31 innings while posting a 2.03 ERA. The trade deadline passed with Los Angeles landing its prize. Now the club can picture a playoff rotation built around Skubal and Yamamoto.
However, one ace cannot rescue three games by himself. Skubal will make his Dodgers debut Tuesday, leaving Wrobleski and the rest of the staff responsible for protecting the bullpen around him.
Chicago Built a Lineup That Makes Pitchers Work
The Cubs enter the Dodgers vs Cubs series at 63-49. Their lineup creates pressure from the first pitch through the final spot in the order. Depth drives Chicago’s run production, not a single superstar. Pete Crow-Armstrong and Nico Hoerner force pitchers to monitor the running game. Michael Busch punishes right-handers who miss over the plate. Meanwhile, Seiya Suzuki and Ian Happ can turn a long at-bat into a damaging one.
Alex Bregman adds the veteran presence that once seemed unusual in a Cubs uniform. Chicago signed him in January to a five-year, $175 million contract after he opted out of his deal with Boston.
According to MLB’s matchup report, Bregman slashed .263/.330/.495 with four home runs and 17 RBIs in July. His at-bats rarely feel rushed. He can foul away a pitcher’s best fastball, dismiss a slider off the plate, and attack the mistake that follows.
That approach threatens the Dodgers rotation more than pure home-run power would. Chicago wants 20-pitch innings. It wants Wrobleski reaching 80 pitches in the fourth or Skubal working from the stretch after an avoidable walk. Every extra throw moves the Cubs closer to Los Angeles’ middle relief.
Wrigley Leaves Little Room for Empty Pitches
The flags above Wrigley’s scoreboard reveal the danger before the first pitch. When they snap toward the bleachers, pitchers can feel the field shrink. A fly ball that dies on the warning track in Los Angeles may carry several rows deep in Chicago.
Command provides the safest defense. Burying a slider two feet in the dirt accomplishes nothing if the hitter never twitches. The same applies to a fastball sailing above the catcher’s mask before the count reaches two strikes. Los Angeles must force Chicago’s hitters to make early decisions. Wrobleski can challenge the hands, Sasaki can disrupt timing with his splitter, and Sheehan must trust his fastball inside the zone.
Chicago counters with Matthew Boyd, Javier Assad, and Shota Imanaga. Boyd posted a 1.67 ERA over five July starts, while Imanaga enters with a 3.67 season mark. The Dodgers cannot assume their offense will erase another short outing.
This Series Will Test More Than the New Ace
Los Angeles did not trade three prospects for Skubal simply to survive August. The move targeted October, when a single poor start can erase six months of dominance. Still, the week at Wrigley will reveal whether the Dodgers rotation can function as a complete unit. Wrobleski must give Roberts length in the opener. Skubal needs to control the emotion surrounding his debut. Sasaki must continue turning cleaner counts into deeper outings.
Three additional starter innings across this series could preserve Phillips for the most dangerous right-handed pocket. They could keep Vesia away from unnecessary back-to-back work or leave Scott available for a one-run ninth. Those details sound small in August. They become season-defining in October.
The Dodgers still possess more arm talent than nearly every contender. What they lack right now is certainty. Injuries have removed the safety net, and Sheehan’s struggles have exposed the final layer beneath it.
Wrigley Field will not wait for that uncertainty to clear. Chicago will foul off pitches, steal extra bases, and force Roberts toward the bullpen phone. The Dodgers rotation now has three games to show that Skubal joined a functioning staff, not a rescue mission.
READ MORE: Clutch Hitting Is Key to Los Angeles Dodgers vs Chicago Cubs
FAQ’s
Why are the Dodgers facing a starting rotation shortage?
Injuries sidelined key starters Blake Snell, Tyler Glasnow, and Shohei Ohtani. This leaves Los Angeles with only five healthy starting pitchers on their roster.
How did Tarik Skubal join the Dodgers pitching staff?
Los Angeles acquired Cy Young winner Tarik Skubal from Detroit on August 2. The Dodgers traded prospects Zyhir Hope, River Ryan, and Brady Smith to complete the deal.
Who will start the opening game against the Chicago Cubs?
Left-hander Justin Wrobleski gets the game one start against Chicago. He previously pitched six scoreless innings against the Cubs in April.
Why does Wrigley Field pose a unique challenge for Dodgers pitchers?
Strong winds at Wrigley Field turn ordinary fly balls into home runs. High pitch counts could force manager Dave Roberts to rely heavily on a tired bullpen.
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