{"sport":"mlb","slug":"billy-baldwin","bio":{"fullName":"Billy Baldwin","position":"RF","team":"NYM","heightInches":72,"weightLbs":175,"birthDate":"1948-06-09","rookieSeason":1975,"lastSeason":1976,"status":"RET","externalIds":{"mlbam":"110509","chadwick":"c424da87","retro":"baldb101","wikidata":"Q4912144"}},"draft":null,"statTables":[{"id":"batting","label":"Batting","columns":[{"key":"g"},{"key":"ab"},{"key":"r"},{"key":"h"},{"key":"doubles"},{"key":"triples"},{"key":"hr"},{"key":"rbi"},{"key":"sb"},{"key":"bb"},{"key":"so"},{"key":"avg"},{"key":"obp"},{"key":"slg"},{"key":"ops"}],"rows":[{"season":1975,"seasonType":"REG","team":"DET","gamesPlayed":30,"values":{"g":30,"ab":95,"r":8,"h":21,"doubles":3,"triples":0,"hr":4,"rbi":8,"sb":2,"bb":5,"so":14,"avg":0.221,"obp":0.26,"slg":0.379,"ops":0.639},"rowScope":"team"},{"season":1976,"seasonType":"REG","team":"NYM","gamesPlayed":9,"values":{"g":9,"ab":22,"r":4,"h":6,"doubles":1,"triples":1,"hr":1,"rbi":5,"sb":0,"bb":1,"so":2,"avg":0.273,"obp":0.292,"slg":0.545,"ops":0.837},"rowScope":"team"}],"careerTotals":{"REG":{"g":39,"ab":117,"r":12,"h":27,"doubles":4,"triples":1,"hr":5,"rbi":13,"sb":2,"bb":6,"so":16,"avg":0.231,"obp":0.266,"slg":0.41,"ops":0.676}}},{"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":1975,"seasonType":"REG","team":"DET","values":{"ops_plus":81,"era_plus":null},"rowScope":"team"},{"season":1976,"seasonType":"REG","team":"NYM","values":{"ops_plus":146,"era_plus":null},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":93,"era_plus":null}},"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":"2026-07-03T03:00:12.318Z"}