{"sport":"mlb","slug":"billy-hamilton-1888","bio":{"fullName":"Billy Hamilton","position":"CF","team":"ATL","heightInches":66,"weightLbs":165,"birthDate":"1866-02-15","rookieSeason":1888,"lastSeason":1901,"status":"RET","externalIds":{"mlbam":"115386","chadwick":"822fed29","retro":"hamib101","wikidata":"Q1251899"}},"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":1888,"seasonType":"REG","team":"Kansas City Blues","gamesPlayed":35,"values":{"g":35,"ab":129,"r":21,"h":34,"doubles":4,"triples":4,"hr":0,"rbi":11,"sb":19,"bb":4,"so":null,"avg":0.264,"obp":0.307,"slg":0.357,"ops":0.664},"rowScope":"team"},{"season":1889,"seasonType":"REG","team":"Kansas City Blues","gamesPlayed":137,"values":{"g":137,"ab":534,"r":144,"h":161,"doubles":17,"triples":12,"hr":3,"rbi":77,"sb":111,"bb":87,"so":41,"avg":0.301,"obp":0.413,"slg":0.395,"ops":0.808},"rowScope":"team"},{"season":1890,"seasonType":"REG","team":"PHI","gamesPlayed":123,"values":{"g":123,"ab":496,"r":133,"h":161,"doubles":13,"triples":9,"hr":2,"rbi":49,"sb":102,"bb":83,"so":37,"avg":0.325,"obp":0.43,"slg":0.399,"ops":0.829},"rowScope":"team"},{"season":1891,"seasonType":"REG","team":"PHI","gamesPlayed":133,"values":{"g":133,"ab":527,"r":141,"h":179,"doubles":23,"triples":7,"hr":2,"rbi":60,"sb":111,"bb":102,"so":28,"avg":0.34,"obp":0.453,"slg":0.421,"ops":0.874},"rowScope":"team"},{"season":1892,"seasonType":"REG","team":"PHI","gamesPlayed":139,"values":{"g":139,"ab":554,"r":132,"h":183,"doubles":21,"triples":7,"hr":3,"rbi":53,"sb":57,"bb":81,"so":29,"avg":0.33,"obp":0.423,"slg":0.41,"ops":0.833},"rowScope":"team"},{"season":1893,"seasonType":"REG","team":"PHI","gamesPlayed":82,"values":{"g":82,"ab":355,"r":110,"h":135,"doubles":22,"triples":7,"hr":5,"rbi":44,"sb":43,"bb":63,"so":7,"avg":0.38,"obp":0.49,"slg":0.524,"ops":1.014},"rowScope":"team"},{"season":1894,"seasonType":"REG","team":"PHI","gamesPlayed":129,"values":{"g":129,"ab":544,"r":192,"h":220,"doubles":25,"triples":15,"hr":4,"rbi":87,"sb":98,"bb":126,"so":17,"avg":0.404,"obp":0.523,"slg":0.528,"ops":1.051},"rowScope":"team"},{"season":1895,"seasonType":"REG","team":"PHI","gamesPlayed":123,"values":{"g":123,"ab":517,"r":166,"h":201,"doubles":22,"triples":6,"hr":7,"rbi":74,"sb":97,"bb":96,"so":30,"avg":0.389,"obp":0.49,"slg":0.495,"ops":0.985},"rowScope":"team"},{"season":1896,"seasonType":"REG","team":"ATL","gamesPlayed":131,"values":{"g":131,"ab":524,"r":153,"h":192,"doubles":24,"triples":10,"hr":3,"rbi":55,"sb":83,"bb":110,"so":29,"avg":0.366,"obp":0.478,"slg":0.468,"ops":0.946},"rowScope":"team"},{"season":1897,"seasonType":"REG","team":"ATL","gamesPlayed":127,"values":{"g":127,"ab":507,"r":152,"h":174,"doubles":17,"triples":5,"hr":3,"rbi":61,"sb":66,"bb":105,"so":null,"avg":0.343,"obp":0.461,"slg":0.414,"ops":0.875},"rowScope":"team"},{"season":1898,"seasonType":"REG","team":"ATL","gamesPlayed":110,"values":{"g":110,"ab":417,"r":110,"h":154,"doubles":16,"triples":5,"hr":3,"rbi":50,"sb":54,"bb":87,"so":null,"avg":0.369,"obp":0.48,"slg":0.453,"ops":0.933},"rowScope":"team"},{"season":1899,"seasonType":"REG","team":"ATL","gamesPlayed":84,"values":{"g":84,"ab":297,"r":63,"h":92,"doubles":7,"triples":1,"hr":1,"rbi":33,"sb":19,"bb":72,"so":null,"avg":0.31,"obp":0.446,"slg":0.35,"ops":0.796},"rowScope":"team"},{"season":1900,"seasonType":"REG","team":"ATL","gamesPlayed":136,"values":{"g":136,"ab":520,"r":103,"h":173,"doubles":20,"triples":5,"hr":1,"rbi":47,"sb":32,"bb":107,"so":null,"avg":0.333,"obp":0.449,"slg":0.396,"ops":0.845},"rowScope":"team"},{"season":1901,"seasonType":"REG","team":"ATL","gamesPlayed":102,"values":{"g":102,"ab":348,"r":71,"h":100,"doubles":11,"triples":2,"hr":3,"rbi":38,"sb":20,"bb":64,"so":null,"avg":0.287,"obp":0.404,"slg":0.356,"ops":0.76},"rowScope":"team"}],"careerTotals":{"REG":{"g":1591,"ab":6269,"r":1691,"h":2159,"doubles":242,"triples":95,"hr":40,"rbi":739,"sb":912,"bb":1187,"so":218,"avg":0.344,"obp":0.455,"slg":0.432,"ops":0.887}}},{"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":1888,"seasonType":"REG","team":"Kansas City Blues","values":{"ops_plus":113,"era_plus":null},"rowScope":"team"},{"season":1889,"seasonType":"REG","team":"Kansas City Blues","values":{"ops_plus":134,"era_plus":null},"rowScope":"team"},{"season":1890,"seasonType":"REG","team":"PHI","values":{"ops_plus":147,"era_plus":null},"rowScope":"team"},{"season":1891,"seasonType":"REG","team":"PHI","values":{"ops_plus":164,"era_plus":null},"rowScope":"team"},{"season":1892,"seasonType":"REG","team":"PHI","values":{"ops_plus":159,"era_plus":null},"rowScope":"team"},{"season":1893,"seasonType":"REG","team":"PHI","values":{"ops_plus":174,"era_plus":null},"rowScope":"team"},{"season":1894,"seasonType":"REG","team":"PHI","values":{"ops_plus":160,"era_plus":null},"rowScope":"team"},{"season":1895,"seasonType":"REG","team":"PHI","values":{"ops_plus":161,"era_plus":null},"rowScope":"team"},{"season":1896,"seasonType":"REG","team":"ATL","values":{"ops_plus":158,"era_plus":null},"rowScope":"team"},{"season":1897,"seasonType":"REG","team":"ATL","values":{"ops_plus":139,"era_plus":null},"rowScope":"team"},{"season":1898,"seasonType":"REG","team":"ATL","values":{"ops_plus":177,"era_plus":null},"rowScope":"team"},{"season":1899,"seasonType":"REG","team":"ATL","values":{"ops_plus":128,"era_plus":null},"rowScope":"team"},{"season":1900,"seasonType":"REG","team":"ATL","values":{"ops_plus":143,"era_plus":null},"rowScope":"team"},{"season":1901,"seasonType":"REG","team":"ATL","values":{"ops_plus":129,"era_plus":null},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":152,"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":"2026-07-03T08:01:23.026Z"}