What is WHIP in Baseball
WHIP (Walks plus Hits per Inning Pitched) is a pitching statistic that measures how many baserunners a pitcher allows per inning — the lower the WHIP, the more dominant the performance.
WHIP stands for Walks plus Hits per Inning Pitched — a pitching statistic that measures how many baserunners a pitcher surrenders per inning. It is one of the most widely used indicators of a pitcher's effectiveness, capturing the ability to prevent opponents from reaching base.
A lower WHIP indicates a more dominant pitcher; a higher WHIP means opponents are getting on base frequently.
How WHIP Is Calculated
WHIP = (Walks + Hits) / Innings Pitched
| Pitcher Example | BB | H | IP | WHIP |
|---|---|---|---|---|
| Pitcher A | 30 | 150 | 200 | 0.90 |
| Pitcher B | 60 | 200 | 200 | 1.30 |
| Pitcher C | 80 | 220 | 180 | 1.67 |
WHIP counts walks (BB) and hits (H) but does NOT count hit batsmen, errors, or other means of reaching base. This keeps the statistic focused on outcomes the pitcher directly controls.
What Is a Good WHIP?
| WHIP Range | Context |
|---|---|
| Under 1.00 | Elite — All-Star / Cy Young level |
| 1.00–1.15 | Excellent |
| 1.15–1.30 | Above average |
| 1.30–1.45 | League average |
| 1.45–1.60 | Below average |
| Above 1.60 | Struggling; rotation risk |
Among career leaders in WHIP for qualified starters, the all-time best include Addie Joss (0.97), Ed Walsh (1.00), and Mariano Rivera (1.00 as a reliever).
WHIP vs. ERA
Earned Run Average (ERA) measures runs allowed; WHIP measures baserunners allowed. They're complementary statistics:
- A pitcher can have a low ERA but a moderate WHIP if they allow baserunners but strand them effectively
- A pitcher with a high WHIP but low ERA may be getting "lucky" with stranded runners and is at elevated risk going forward
- ERA can be inflated by defense (errors); WHIP focuses on pitcher-controlled outcomes
WHIP is considered a better short-term predictor of future performance than ERA because it less subject to defensive variance.
WHIP in Fantasy Baseball
WHIP is a standard category in most fantasy baseball leagues — particularly in roto (rotisserie) format leagues that track cumulative pitching stats. Drafting pitchers with sub-1.15 WHIPs tends to correlate with winning WHIP and ERA categories over a full season.
It pairs naturally with strikeout rates and walk rates when evaluating pitching prospects.
WHIP and Starting vs. Relief Pitchers
Closers and high-leverage relief pitchers routinely post WHIPs under 1.00 — they face the lineup once, pitch in short bursts, and can maximize effort. Starting pitchers typically face the order 3+ times and accumulate more baserunners per inning due to fatigue and familiarity.
Comparing WHIPs across starters and relievers without context can be misleading. A 1.20 WHIP for a starting pitcher facing 30 starts may represent excellent sustained performance, while a 1.20 WHIP for a closer is below expectations.