Yamamoto Overcomes First-Inning Habit to Shut Down Padres

Yoshinobu Yamamoto delivered seven strong innings against the San Diego Padres on Monday night. The 27-year-old right-hander allowed a homer to designated hitter Miguel Andujar in the opening frame before settling in to strike out eight and scatter three hits at Petco Park.

The outing marked a sharp turnaround from his previous start against the Giants, where Yamamoto was charged with a season-high five runs. Yet the early blast from Andujar underscored a persistent vulnerability: seven of the 21 earned runs Yamamoto has allowed across nine starts this year have come in the opening frame.

What’s Behind the Opening-Frame Problem?

The numbers reveal a pattern that goes beyond simple rust. According to MLB.com, seven of Yamamoto’s 21 earned runs allowed this season have come in the first inning alone — roughly a third of his total damage in just one-ninth of his innings pitched. That disparity suggests something mechanical or mental is at play before he settles into his rhythm.

The Dodgers’ pitching staff as a whole has also been vulnerable to two-strike homers, surrendering 20 this year, tied for the second most in the Majors behind the Nationals. Breaking down the advanced metrics, Yamamoto‘s zone rate and chase rate likely dip below his career norms early on, a common trait among pitchers who need an inning to calibrate their command. The long ball has been his Achilles’ heel, and opposing lineups are clearly attacking him early before his devastating splitter and curveball find their groove.

For a pitcher signed to a 12-year, $325 million contract, the margin for error is razor-thin. Those early lapses compound quickly in a tight National League West race where every run matters.

Key Stats From Monday’s Start

Yamamoto’s line against the Padres was arguably his most complete of the season. He struck out eight batters while walking just two, generating swings and misses on his signature splitter that has made him one of the most coveted arms in baseball since his arrival from Japan. The lone run on Andujar’s homer was a small victory compared to the five-run disaster against San Francisco in his prior outing.

Looking at the tape, Yamamoto’s velocity held steady throughout the outing. His pitch sequencing improved dramatically after the opening frame. He began mixing his cutter more aggressively against right-handed hitters, a subtle adjustment that kept the Padres’ lineup off balance through the seventh. The film shows a pitcher who looked visibly frustrated after the Andujar homer but channeled that energy into sharper command on the edges of the zone.

Key Developments

• Miguel Andujar’s early homer was the only run Yamamoto allowed across seven innings of work against the Padres
• Yamamoto was charged with a season-high five runs in his previous start against the Giants before Monday’s bounceback
• The Dodgers have surrendered 20 two-strike homers in 2026, tied for the second most in the Majors behind the Washington Nationals
• Seven of Yamamoto’s 21 earned runs allowed this season have come in the opening frame across nine total starts

What This Means for the Dodgers’ Rotation

Los Angeles needs Yamamoto to be the ace his contract promises. Monday’s outing — early inning notwithstanding — was a step in the right direction. The Dodgers’ rotation has dealt with inconsistency throughout the early part of the 2026 regular season, and having Yamamoto pitch deep into games while keeping the damage to a single run is exactly what the front office brass envisioned when they pulled the trigger on the landmark deal.

If he can trim that opening-frame ERA closer to his overall numbers, he becomes a legitimate Cy Young candidate. The counterargument is equally valid: a pitcher of Yamamoto’s caliber shouldn’t need an inning to find his rhythm, and the Dodgers can’t afford to fall behind early in a competitive NL West where every game carries playoff implications.

Based on available data, the trend is concerning but not irreversible. Yamamoto’s track record in Japan’s Nippon Professional Baseball showed no such early-inning splits, suggesting this is an adjustment issue rather than a fundamental flaw. The next few starts will tell whether Monday’s performance marks a genuine turning point or just a blip in a frustrating pattern.