{"sport":"mlb","slug":"buck-leonard","bio":{"fullName":"Buck Leonard","position":"1B","team":null,"heightInches":70,"weightLbs":185,"birthDate":"1907-09-08","rookieSeason":1935,"lastSeason":1948,"status":"RET","externalIds":{"mlbam":"818520","chadwick":"231446fd","retro":"leonb101"}},"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":1935,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":40,"values":{"g":40,"ab":171,"r":33,"h":70,"doubles":19,"triples":3,"hr":4,"rbi":41,"sb":5,"bb":19,"so":null,"avg":0.409,"obp":0.471,"slg":0.626,"ops":1.097},"rowScope":"team"},{"season":1936,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":35,"values":{"g":35,"ab":124,"r":35,"h":43,"doubles":3,"triples":4,"hr":6,"rbi":34,"sb":2,"bb":29,"so":null,"avg":0.347,"obp":0.471,"slg":0.581,"ops":1.052},"rowScope":"team"},{"season":1937,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":42,"values":{"g":42,"ab":170,"r":54,"h":64,"doubles":15,"triples":3,"hr":13,"rbi":55,"sb":2,"bb":25,"so":null,"avg":0.376,"obp":0.462,"slg":0.729,"ops":1.191},"rowScope":"team"},{"season":1938,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":43,"values":{"g":43,"ab":153,"r":42,"h":64,"doubles":12,"triples":5,"hr":9,"rbi":53,"sb":1,"bb":25,"so":null,"avg":0.418,"obp":0.5,"slg":0.739,"ops":1.239},"rowScope":"team"},{"season":1939,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":32,"values":{"g":32,"ab":121,"r":36,"h":44,"doubles":11,"triples":1,"hr":11,"rbi":48,"sb":2,"bb":20,"so":null,"avg":0.364,"obp":0.454,"slg":0.744,"ops":1.198},"rowScope":"team"},{"season":1940,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":54,"values":{"g":54,"ab":185,"r":49,"h":70,"doubles":14,"triples":5,"hr":8,"rbi":42,"sb":1,"bb":39,"so":null,"avg":0.378,"obp":0.491,"slg":0.638,"ops":1.129},"rowScope":"team"},{"season":1941,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":57,"values":{"g":57,"ab":196,"r":60,"h":68,"doubles":12,"triples":7,"hr":13,"rbi":50,"sb":5,"bb":40,"so":null,"avg":0.347,"obp":0.462,"slg":0.679,"ops":1.141},"rowScope":"team"},{"season":1942,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":38,"values":{"g":38,"ab":125,"r":19,"h":27,"doubles":6,"triples":1,"hr":0,"rbi":21,"sb":3,"bb":24,"so":null,"avg":0.216,"obp":0.342,"slg":0.28,"ops":0.622},"rowScope":"team"},{"season":1943,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":68,"values":{"g":68,"ab":255,"r":71,"h":84,"doubles":18,"triples":8,"hr":4,"rbi":61,"sb":2,"bb":49,"so":null,"avg":0.329,"obp":0.443,"slg":0.51,"ops":0.953},"rowScope":"team"},{"season":1944,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":50,"values":{"g":50,"ab":184,"r":49,"h":63,"doubles":16,"triples":7,"hr":7,"rbi":40,"sb":1,"bb":31,"so":null,"avg":0.342,"obp":0.45,"slg":0.62,"ops":1.07},"rowScope":"team"},{"season":1945,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":40,"values":{"g":40,"ab":155,"r":31,"h":53,"doubles":6,"triples":3,"hr":5,"rbi":34,"sb":0,"bb":22,"so":null,"avg":0.342,"obp":0.43,"slg":0.516,"ops":0.946},"rowScope":"team"},{"season":1946,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":50,"values":{"g":50,"ab":169,"r":37,"h":56,"doubles":6,"triples":4,"hr":7,"rbi":45,"sb":3,"bb":39,"so":null,"avg":0.331,"obp":0.459,"slg":0.538,"ops":0.997},"rowScope":"team"},{"season":1947,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":35,"values":{"g":35,"ab":109,"r":20,"h":33,"doubles":5,"triples":1,"hr":6,"rbi":24,"sb":4,"bb":28,"so":null,"avg":0.303,"obp":0.449,"slg":0.532,"ops":0.981},"rowScope":"team"},{"season":1948,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":37,"values":{"g":37,"ab":122,"r":23,"h":34,"doubles":8,"triples":0,"hr":4,"rbi":18,"sb":1,"bb":26,"so":null,"avg":0.279,"obp":0.413,"slg":0.443,"ops":0.856},"rowScope":"team"}],"careerTotals":{"REG":{"g":621,"ab":2239,"r":559,"h":773,"doubles":151,"triples":52,"hr":97,"rbi":566,"sb":32,"bb":416,"so":null,"avg":0.345,"obp":0.452,"slg":0.589,"ops":1.041}}},{"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":1935,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":184,"era_plus":null},"rowScope":"team"},{"season":1936,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":176,"era_plus":null},"rowScope":"team"},{"season":1937,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":208,"era_plus":null},"rowScope":"team"},{"season":1938,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":233,"era_plus":null},"rowScope":"team"},{"season":1939,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":222,"era_plus":null},"rowScope":"team"},{"season":1940,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":198,"era_plus":null},"rowScope":"team"},{"season":1941,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":226,"era_plus":null},"rowScope":"team"},{"season":1942,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":86,"era_plus":null},"rowScope":"team"},{"season":1943,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":160,"era_plus":null},"rowScope":"team"},{"season":1944,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":192,"era_plus":null},"rowScope":"team"},{"season":1945,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":169,"era_plus":null},"rowScope":"team"},{"season":1946,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":187,"era_plus":null},"rowScope":"team"},{"season":1947,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":178,"era_plus":null},"rowScope":"team"},{"season":1948,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":153,"era_plus":null},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":186,"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":"2026-07-03T03:21:00.501Z"}