xFIP क्या है?

xFIP (Expected FIP) होम रन की संख्या को औसत फ्लाई बॉल दर के आधार पर प्रतिस्थापित करके FIP की गणना करता है।

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बेसबॉल FIP कैलकुलेटर

FIP, xFIP और FIP-ERA अंतर — रक्षा-स्वतंत्र पिचिंग मेट्रिक्स

पिचर के आँकड़े (Pitcher Stats)

पिचर के गेम लॉग या सीजन योग दर्ज करें

इनिंग्स पिच (IP) प्रारूप: X.Y का उपयोग करें जहाँ Y आउट्स (0, 1, या 2) है। उदाहरण: 7.2 = 7 इनिंग्स + 2 आउट्स।

इनिंग्स पिच (IP)

होम रन (HR)

वॉक्स (BB)

हिट बाई पिच (HBP)

स्ट्राइकआउट्स (K)

फ्लाई बॉल्स (FB) xFIP गणना के लिए

FIP स्थिरांक (FIP Constant) FIP को ERA स्केल में लाता है; डिफ़ॉल्ट 3.10

वास्तविक ERA (वैकल्पिक) FIP-ERA अंतर दिखाने के लिए

त्वरित सूत्र संदर्भ (Formulas Quick Reference)

FIP

((HR×13) + (BB+HBP)×3 − K×2) ÷ IP + C

xFIP

Same as FIP but xHR replaces HR
xHR = FB × 0.105

बेसबॉल में FIP (फील्डिंग इंडिपेंडेंट पिचिंग) क्या है?

FIP (Fielding Independent Pitching) टॉम टैंगो द्वारा पेश किया गया एक सांख्यिकीय पैमाना है जो पिचर के प्रदर्शन को केवल उन परिणामों के आधार पर मापता है जिन पर उसका सीधा नियंत्रण होता है: होम रन, वॉक, हिट बाई पिच, और स्ट्राइकआउट। अन्य सभी गेंदें जो मैदान में खेली जाती हैं (जैसे सिंगल, डबल) वे काफी हद तक फील्डरों के प्रदर्शन से प्रभावित होती हैं, इसलिए उन्हें FIP से बाहर रखा जाता है।

FIP सूत्र की व्याख्या (Formula)

FIP की गणना का सूत्र इस प्रकार है:

FIP = ((HR × 13) + (BB + HBP) × 3 − K × 2) ÷ IP + FIP_Constant

प्रत्येक गुणांक का अपना महत्व है:

HR × 13: होम रन पिचर के लिए सबसे महंगे साबित होते हैं।
(BB + HBP) × 3: वॉक और HBP बल्लेबाजों को बेस पर ले जाते हैं।
K × 2 (घटाया जाता है): स्ट्राइकआउट से रन बचने की संभावना बढ़ती है।
FIP स्थिरांक (Constant ~3.10): इसे इसलिए जोड़ा जाता है ताकि FIP का स्केल ERA के साथ मेल खा सके।

The coefficients reflect each event's historical run value:

HR × 13 — Home runs are extremely costly (average ~1.4 runs per HR in context).
(BB + HBP) × 3 — Walks and hit batters put runners on base; each costs roughly 0.33 runs.
K × 2 (subtracted) — Strikeouts prevent baserunners and double-play scenarios; each saves ~0.22 runs.
FIP Constant (~3.10) — Added so the FIP scale matches the ERA scale for the given season.

Worked example: A pitcher throws 180 IP, allows 20 HR, 60 BB, 5 HBP, records 200 K, FIP constant = 3.10.

Numerator = (20×13) + (60+5)×3 − 200×2 = 260 + 195 − 400 = 55
FIP = 55 ÷ 180 + 3.10 = 0.306 + 3.10 = 3.41

FIP vs ERA — Why FIP is More Predictive

ERA is influenced by many factors a pitcher cannot control: fielder errors, positioning, range of outfielders, defensive shifts, stadium dimensions, and even sequencing of hits. A pitcher can allow a leadoff walk and then give up a bases-clearing double — two events — or allow four consecutive singles for the same result. ERA blames the pitcher equally in both cases, even though the bloop hits behind a diving second baseman were not his fault.

Research by Tom Tango and others has demonstrated that FIP is a significantly better predictor of a pitcher's ERA in the following season than the pitcher's ERA in the current season. This is because ERA contains substantial "noise" from defense and luck, whereas FIP strips that noise away. In short, FIP tells you what a pitcher earned, while ERA tells you what the scorecard shows.

FIP Benchmarks

FIP Range	Rating	Description
< 2.90	Elite	True ace, Cy Young contender
2.90 – 3.50	Excellent	No. 1 / 2 starter, All-Star caliber
3.50 – 4.20	Average	Solid rotation piece, league average
> 4.20	Poor	Below average, high regression risk

xFIP: One Step Further

Even FIP can be influenced by luck — specifically, the rate at which fly balls leave the park. League-average HR/FB rate is approximately 10.5%, but it can swing 3–5% in either direction for individual pitchers in a given season. xFIP normalizes this by replacing the pitcher's actual HR with an expected HR based on their fly ball total: xHR = Fly Balls × 0.105.

xFIP is the most reliable short-term ERA predictor available. However, a small subset of pitchers — those who genuinely suppress hard contact or have "stuff" that limits fly-ball distances — may consistently outperform their xFIP.

अक्सर पूछे जाने वाले प्रश्न (FAQ)

बेसबॉल में FIP क्या है?

FIP केवल पिचर के सीधे नियंत्रण वाले परिणामों के आधार पर प्रदर्शन मापता है (HR, वॉक, HBP, स्ट्राइकआउट) और यह रक्षात्मक सहायता के शोर को हटा देता है।

How is FIP calculated?

FIP = ((HR × 13) + (BB + HBP) × 3 − K × 2) ÷ IP + FIP_Constant. The FIP constant is typically around 3.10 and is recalculated each season to keep FIP on the same scale as ERA. Home runs receive the heaviest weight (13) because they directly produce runs. Strikeouts reduce FIP (coefficient −2) while walks and hit batters increase it (+3 each).

What is xFIP?

xFIP (Expected FIP) takes FIP one step further by replacing a pitcher's actual home run total with an expected home run total based on their fly ball count. Expected HR = Fly Balls × 0.105 (the historical league-average HR/FB rate of ~10.5%). Because a pitcher's actual HR/FB rate fluctuates significantly year to year due to luck, xFIP is an even better predictor of future performance than FIP.

Is FIP better than ERA for evaluating pitchers?

For most pitchers, FIP is a better indicator of true pitching skill than ERA because it removes the influence of defense and batted-ball luck. ERA reflects what actually happened on the field (including unearned runs from errors, etc.); FIP isolates what the pitcher was responsible for. However, pitchers who consistently induce weak contact or grounders may sustainably outperform their FIP — in those cases, metrics like xFIP or SIERA may give a more complete picture.

What does a negative FIP minus ERA value mean?

When FIP − ERA is negative, it means the pitcher's FIP is lower than their ERA — they performed better by the defense-independent measure than the scoreboard shows. This is often caused by poor defense or bad sequencing luck (many singles bunched together). Expect ERA regression toward FIP going forward. When FIP − ERA is positive, the pitcher's ERA is lower than FIP, meaning they benefited from great defense or lucky batted-ball outcomes. Their ERA may worsen as luck normalizes.