Effectiveness and workload belong together
These eight pitchers made starts for Los Angeles in 2025. They are a selected group, not every pitcher who started a Dodgers game.
| Pitcher | G | GS | IP | ERA | K | WHIP |
|---|---|---|---|---|---|---|
| Yoshinobu Yamamoto | 30 | 30 | 173.2 | 2.49 | 201 | 0.99 |
| Clayton Kershaw | 23 | 22 | 112.2 | 3.36 | 84 | 1.22 |
| Tyler Glasnow | 18 | 18 | 90.1 | 3.19 | 106 | 1.10 |
| Dustin May | 19 | 18 | 104.0 | 4.85 | 97 | 1.35 |
| Shohei Ohtani | 14 | 14 | 47.0 | 2.87 | 62 | 1.04 |
| Emmet Sheehan | 15 | 12 | 73.1 | 2.82 | 89 | 0.97 |
| Blake Snell | 11 | 11 | 61.1 | 2.35 | 72 | 1.26 |
| Roki Sasaki | 10 | 8 | 36.1 | 4.46 | 28 | 1.43 |
Source: ESPN, Los Angeles Dodgers Pitching Stats 2025. The five original columns match ESPN's 2025 Regular Season / All Splits table; G was added to show relief appearances. GS, IP, ERA, and K were also cross-checked against StatMuse's regular-season pitching table. Checked with AI assistance September 5, 2026.
Scope matters. May's row includes only his Dodgers pitching, excluding Boston. Kershaw, May, Sheehan, and Sasaki have more games than starts; their IP, ERA, K, and WHIP include relief work. Do not call these starter-only statistics.
Read the numbers correctly
- G / GS — games / games started
- G counts all pitching appearances. GS counts games begun as the pitcher.
- IP — innings pitched
- Measures outs recorded. The final digit is baseball notation: .1 means one out and .2 means two outs.
- ERA — earned run average
- Earned runs allowed per nine innings: earned runs × 9 ÷ innings. Lower means fewer earned runs per inning.
- K / SO — strikeouts
- Batters struck out. A total reflects both strikeout ability and opportunities to pitch.
- WHIP — walks plus hits per inning pitched
- (Walks + hits) ÷ innings. Lower means fewer of these baserunners; hit batters and errors are not included.
- IL — injured list
- A roster status documented by dated reporting or transactions. A low start total alone does not establish an injury.
Innings example: 173.2 is 173⅔ innings, not 173.2 decimal innings. Yamamoto recorded 521 outs; Kershaw recorded 338. Their difference is (521 − 338) ÷ 3 = 61 innings.
Questions these resources help answer
- Who combined a low ERA with a large pitching workload?
- Does the pitcher with the lowest ERA also provide the most innings?
- Which totals include relief outings or exclude time with another team?
- What documented injury explains a gap in a pitcher's availability?
- How did the team complete its season when key starters were unavailable?
Main research question: How did the Dodgers' rotation cope with injuries during the 2025 regular season, and what can the evidence establish about individual pitchers?
Step 1 · Establish the season and the comparison
ESPN
Page: Los Angeles Dodgers Pitching Stats 2025
How to use it: Select Pitching, 2025 Regular Season, and All Splits. Find a pitcher's row and read GS and IP alongside ERA and WHIP. The team header can display a current record; use the season selector and table, not that header, to identify the dataset. Read the midseason-trades note below the tables before using May's numbers.
Sample analysis: who supplied effective innings?
Evidence: Yamamoto led these eight pitchers in starts (30), innings (173.2), and strikeouts (201), with a 2.49 ERA. Snell's ERA was lower at 2.35, but he pitched only 61.1 innings. Yamamoto supplied 112⅓ more innings than Snell. Kershaw supplied the second-largest workload in this selected group, 112.2 innings.
Interpretation: Yamamoto combined a large workload with strong run prevention. Ranking only by ERA would hide this contribution. Snell's lower ERA describes the innings he actually pitched; it does not tell us what his ERA would have been over Yamamoto's workload.
For another comparison, Glasnow struck out 106 batters in 90⅓ innings: 106 × 9 ÷ (90 + 1/3) ≈ 10.56 K per nine innings. Kershaw's 84 × 9 ÷ (112 + 2/3) ≈ 6.71. Glasnow recorded strikeouts at a higher rate, while Kershaw supplied more innings. Neither measure by itself proves an injury effect.
Step 2 · Cross-check and widen the view
StatMuse
Page: Los Angeles Dodgers 2025 Team & Player Stats
How to use it: Choose 2025, then scroll past batting to Team Regular Season Pitching Stats and Regular Season Pitching Stats. Compare the same rows with ESPN. Scroll horizontally for additional columns. Do not mix in the postseason tables farther down or the current-season news and leaderboards.
Sample analysis: how much work did the selected group cover?
Evidence: StatMuse agrees with ESPN on the selected pitchers' GS, IP, ERA, and strikeouts. It lists 1,441 team innings and a 93–69 record. Adding the eight pitchers gives 133 starts and 698⅔ innings, leaving 29 of the team's 162 starts to other pitchers.
Calculation: (698 + 2/3) ÷ 1,441 × 100 ≈ 48.5% of all team innings came from this selected group. The remaining 742⅓ innings came from other pitchers, including both starters and relievers. They are not automatically 742⅓ bullpen innings: even the selected group's totals include some relief work.
Interpretation: The season required contributions beyond these eight names. Agreement between two sites helps catch transcription or filter mistakes, but does not establish that they have independent underlying data. Neither season table explains why someone missed games. That requires a dated source.
Step 3 · Add a documented injury timeline
Yahoo Sports / Associated Press
Page: Glasnow's solid return should steady Dodgers' rotation. Now they just need to start hitting again — Steve Megargee, Associated Press, July 9, 2025.
How to use it: Check the article date and byline, then record the injury, last appearance, and return. This is a dated news report rather than a statistics database. It adds availability evidence that the two statistical websites cannot supply. Ignore unrelated 2026 stories and advertisements on the page.
Sample analysis: what did the injury change?
Documented evidence: The July 9 report says Glasnow returned from the injured list after shoulder inflammation. His previous Dodgers appearance was April 27. In his return, he allowed one unearned run in five innings. Snell and Sasaki were still out with injuries on the report's date.
Connect the sources: ESPN supplies Glasnow's final 18 starts, 90.1 innings, and 3.19 ERA; StatMuse corroborates his season line and supplies the team context. The AP report explains an actual interruption in his availability. His workload was 83⅓ innings below Yamamoto's, but that entire difference cannot be assigned to injury: schedules, rest, and outing length also matter.
What remains uncertain: Five innings without an earned run demonstrate an effective return outing, not proof that the injury improved his pitching or had no lasting effect. To test a performance change, collect game-by-game IP, ER, K, BB, and H before and after the absence; compare aggregate rates, opponents, pitch counts, and sample sizes. Do not average individual game ERAs or assume that a gap without a dated explanation is an injury.
What the three sources support
Availability shaped the workload; ERA alone cannot explain it.
Yamamoto supplied the most innings among the selected starters while preventing earned runs at a low rate. The Dodgers also needed starts and innings from pitchers beyond this group. Glasnow's documented absence shows how an injury removed a starter from the available rotation for part of the season.
The team finished 93–69 despite these documented availability problems. The data support a cautious explanation: substantial contributions from available pitchers and a wider pitching staff helped the team complete the season. They do not isolate how many wins the rotation produced, prove which replacement covered each missed start, or establish how every injury changed pitching effectiveness.
Evidence versus interpretation: Season totals and the dated return report are evidence. The explanation about shared workload is an interpretation built from them. A causal claim about injuries changing ERA would need a more detailed study.
Project and source notes
This is an AI-assisted class project. ChatGPT helped with HTML/CSS, layout, source research, screenshot collection, and drafting the explanations and analysis. The Dodgers topic already involved AI assistance before this revision. Source logos and screenshots belong to their respective owners and are included for educational identification and commentary; this page is not affiliated with the Dodgers or these websites.
The original independent weather attempt must be preserved separately and the topic change checked with the teacher. The backup of the file before this revision already contains Dodgers content and must not be labeled as independent pre-AI work.