{"sport":"mlb","slug":"jim-austin","bio":{"fullName":"Jim Austin","position":"P","team":"MIL","heightInches":74,"weightLbs":200,"birthDate":"1963-12-07","rookieSeason":1991,"lastSeason":1993,"status":"RET","externalIds":{"mlbam":"110388","chadwick":"b97d823c","retro":"austj001","wikidata":"Q6193456"}},"draft":{"year":1986,"round":null,"pick":null,"team":null,"undrafted":false},"statTables":[{"id":"pitching","label":"Pitching","columns":[{"key":"g"},{"key":"gs"},{"key":"w"},{"key":"l"},{"key":"sv"},{"key":"ip"},{"key":"so"},{"key":"bb"},{"key":"h"},{"key":"er"},{"key":"hr"},{"key":"era"},{"key":"whip"}],"rows":[{"season":1991,"seasonType":"REG","team":"MIL","gamesPlayed":5,"values":{"g":5,"gs":0,"w":0,"l":0,"sv":0,"ip":8.2,"so":3,"bb":11,"h":8,"er":8,"hr":1,"era":8.31,"whip":2.19},"rowScope":"team"},{"season":1992,"seasonType":"REG","team":"MIL","gamesPlayed":47,"values":{"g":47,"gs":0,"w":5,"l":2,"sv":0,"ip":58.1,"so":30,"bb":32,"h":38,"er":12,"hr":2,"era":1.85,"whip":1.2},"rowScope":"team"},{"season":1993,"seasonType":"REG","team":"MIL","gamesPlayed":31,"values":{"g":31,"gs":0,"w":1,"l":2,"sv":0,"ip":33,"so":15,"bb":13,"h":28,"er":14,"hr":3,"era":3.82,"whip":1.24},"rowScope":"team"}],"careerTotals":{"REG":{"g":83,"gs":0,"w":6,"l":4,"sv":0,"ip":100,"so":48,"bb":56,"h":74,"er":34,"hr":6,"era":3.06,"whip":1.3}}},{"id":"advanced","label":"Advanced (League-Relative)","columns":[{"key":"ops_plus","label":"OPS+","description":"On-base plus slugging vs the player's own season+league (100 = league average). Park-unadjusted; OBP uses a consistent (H+BB)/(AB+BB) rate. Higher is better.","format":"int","higherIsBetter":true},{"key":"era_plus","label":"ERA+","description":"Earned-run average vs the player's own season+league (100 = league average). Park-unadjusted. Higher is better.","format":"int","higherIsBetter":true}],"rows":[{"season":1991,"seasonType":"REG","team":"MIL","values":{"ops_plus":null,"era_plus":45},"rowScope":"team"},{"season":1992,"seasonType":"REG","team":"MIL","values":{"ops_plus":null,"era_plus":190},"rowScope":"team"},{"season":1993,"seasonType":"REG","team":"MIL","values":{"ops_plus":null,"era_plus":110},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":null,"era_plus":125}},"advancedMeta":{"method":"computed in-house from MLB StatsAPI season batting/pitching lines, normalized to each player's own (season, league) baseline","formulas":{"era_plus":"100 * lgERA / playerERA (league ERA = 9 * ΣER / ΣIP over the season+league)","ops_plus":"100 * (OBP/lgOBP + SLG/lgSLG - 1)","career_era_plus":"innings-weighted league ERA / career ERA (B-Ref method)","career_ops_plus":"AB-weighted OBP & SLG against AB-weighted league rates"},"caveats":["PARK-UNADJUSTED: no park-factor data exists in the corpus, so these are league-relative but not park-adjusted (true B-Ref ERA+/OPS+ also divide by a park factor)","OBP baseline uses a consistent (H+BB)/(AB+BB) reached-base rate for BOTH player and league — the source feed carries no HBP or SF, so this is not the full (H+BB+HBP)/(AB+BB+HBP+SF) OBP; SLG is exact from the hit-type columns","league resolved from team code + season (most-recently-founded franchise existing by that season); the same resolver builds the baseline and looks up the player, so ratios stay internally coherent","a (season, league) bucket below the sample floor (3000 AB batting / 1000 IP pitching) yields null — no noisy baselines","regular season only; postseason lines are excluded from league baselines and metrics","AL and NL and each historical/Negro league are normalized separately — never blended across leagues or eras"]}}],"dataSources":["MLB StatsAPI (statsapi.mlb.com — official public league API; facts only, raw payloads not republished)"],"generatedAt":"2026-07-03T02:37:06.742Z"}