{"sport":"mlb","slug":"hughie-jennings","bio":{"fullName":"Hughie Jennings","position":"SS","team":"DET","heightInches":69,"weightLbs":165,"birthDate":"1869-04-02","rookieSeason":1891,"lastSeason":1918,"status":"RET","externalIds":{"mlbam":"116528","chadwick":"c9d82d83","retro":"jennh101","wikidata":"Q1634713"}},"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":1891,"seasonType":"REG","team":"Louisville Colonels","gamesPlayed":90,"values":{"g":90,"ab":360,"r":53,"h":105,"doubles":10,"triples":8,"hr":1,"rbi":58,"sb":12,"bb":17,"so":36,"avg":0.292,"obp":0.339,"slg":0.372,"ops":0.711},"rowScope":"team"},{"season":1892,"seasonType":"REG","team":"Louisville Colonels","gamesPlayed":152,"values":{"g":152,"ab":594,"r":65,"h":133,"doubles":16,"triples":4,"hr":2,"rbi":61,"sb":28,"bb":30,"so":30,"avg":0.224,"obp":0.272,"slg":0.274,"ops":0.546},"rowScope":"team"},{"season":1893,"seasonType":"REG","gamesPlayed":39,"gamesStarted":null,"values":{"g":39,"ab":143,"r":12,"h":26,"doubles":3,"triples":0,"hr":1,"rbi":15,"sb":0,"bb":7,"so":6,"avg":0.182,"slg":0.224,"obp":null,"ops":null},"team":"TOT","rowScope":"total"},{"season":1893,"seasonType":"REG","team":"Baltimore Orioles","gamesPlayed":16,"values":{"g":16,"ab":55,"r":6,"h":14,"doubles":0,"triples":0,"hr":1,"rbi":6,"sb":0,"bb":4,"so":3,"avg":0.255,"obp":0.339,"slg":0.309,"ops":0.648},"rowScope":"team"},{"season":1893,"seasonType":"REG","team":"Louisville Colonels","gamesPlayed":23,"values":{"g":23,"ab":88,"r":6,"h":12,"doubles":3,"triples":0,"hr":0,"rbi":9,"sb":0,"bb":3,"so":3,"avg":0.136,"obp":0.174,"slg":0.17,"ops":0.344},"rowScope":"team"},{"season":1894,"seasonType":"REG","team":"Baltimore Orioles","gamesPlayed":128,"values":{"g":128,"ab":501,"r":134,"h":168,"doubles":28,"triples":16,"hr":4,"rbi":109,"sb":37,"bb":37,"so":17,"avg":0.335,"obp":0.411,"slg":0.479,"ops":0.89},"rowScope":"team"},{"season":1895,"seasonType":"REG","team":"Baltimore Orioles","gamesPlayed":131,"values":{"g":131,"ab":529,"r":159,"h":204,"doubles":41,"triples":7,"hr":4,"rbi":125,"sb":53,"bb":24,"so":17,"avg":0.386,"obp":0.444,"slg":0.512,"ops":0.956},"rowScope":"team"},{"season":1896,"seasonType":"REG","team":"Baltimore Orioles","gamesPlayed":130,"values":{"g":130,"ab":521,"r":125,"h":209,"doubles":27,"triples":9,"hr":0,"rbi":121,"sb":70,"bb":19,"so":11,"avg":0.401,"obp":0.472,"slg":0.488,"ops":0.96},"rowScope":"team"},{"season":1897,"seasonType":"REG","team":"Baltimore Orioles","gamesPlayed":117,"values":{"g":117,"ab":439,"r":133,"h":156,"doubles":26,"triples":9,"hr":2,"rbi":79,"sb":60,"bb":42,"so":null,"avg":0.355,"obp":0.463,"slg":0.469,"ops":0.932},"rowScope":"team"},{"season":1898,"seasonType":"REG","team":"Baltimore Orioles","gamesPlayed":143,"values":{"g":143,"ab":534,"r":135,"h":175,"doubles":25,"triples":11,"hr":1,"rbi":87,"sb":28,"bb":78,"so":null,"avg":0.328,"obp":0.454,"slg":0.421,"ops":0.875},"rowScope":"team"},{"season":1899,"seasonType":"REG","gamesPlayed":69,"gamesStarted":null,"values":{"g":69,"ab":224,"r":44,"h":67,"doubles":3,"triples":12,"hr":0,"rbi":42,"sb":0,"bb":22,"so":null,"avg":0.299,"slg":0.42,"obp":null,"ops":null},"team":"TOT","rowScope":"total"},{"season":1899,"seasonType":"REG","team":"Baltimore Orioles","gamesPlayed":2,"values":{"g":2,"ab":8,"r":2,"h":3,"doubles":0,"triples":2,"hr":0,"rbi":2,"sb":0,"bb":0,"so":null,"avg":0.375,"obp":0.375,"slg":0.875,"ops":1.25},"rowScope":"team"},{"season":1899,"seasonType":"REG","team":"LAD","gamesPlayed":67,"values":{"g":67,"ab":216,"r":42,"h":64,"doubles":3,"triples":10,"hr":0,"rbi":40,"sb":0,"bb":22,"so":null,"avg":0.296,"obp":0.409,"slg":0.403,"ops":0.812},"rowScope":"team"},{"season":1900,"seasonType":"REG","team":"LAD","gamesPlayed":115,"values":{"g":115,"ab":441,"r":61,"h":120,"doubles":18,"triples":6,"hr":1,"rbi":69,"sb":31,"bb":31,"so":null,"avg":0.272,"obp":0.348,"slg":0.347,"ops":0.695},"rowScope":"team"},{"season":1901,"seasonType":"REG","team":"PHI","gamesPlayed":82,"values":{"g":82,"ab":302,"r":38,"h":79,"doubles":21,"triples":2,"hr":1,"rbi":39,"sb":13,"bb":25,"so":null,"avg":0.262,"obp":0.342,"slg":0.354,"ops":0.696},"rowScope":"team"},{"season":1902,"seasonType":"REG","team":"PHI","gamesPlayed":78,"values":{"g":78,"ab":290,"r":32,"h":79,"doubles":13,"triples":4,"hr":1,"rbi":32,"sb":8,"bb":14,"so":null,"avg":0.272,"obp":0.33,"slg":0.355,"ops":0.685},"rowScope":"team"},{"season":1903,"seasonType":"REG","team":"LAD","gamesPlayed":6,"values":{"g":6,"ab":17,"r":2,"h":4,"doubles":0,"triples":0,"hr":0,"rbi":1,"sb":1,"bb":1,"so":null,"avg":0.235,"obp":0.316,"slg":0.235,"ops":0.551},"rowScope":"team"},{"season":1907,"seasonType":"REG","team":"DET","gamesPlayed":3,"values":{"g":3,"ab":4,"r":0,"h":1,"doubles":1,"triples":0,"hr":0,"rbi":0,"sb":0,"bb":0,"so":null,"avg":0.25,"obp":0.25,"slg":0.5,"ops":0.75},"rowScope":"team"},{"season":1909,"seasonType":"REG","team":"DET","gamesPlayed":2,"values":{"g":2,"ab":4,"r":1,"h":2,"doubles":0,"triples":0,"hr":0,"rbi":2,"sb":0,"bb":0,"so":null,"avg":0.5,"obp":0.5,"slg":0.5,"ops":1},"rowScope":"team"},{"season":1912,"seasonType":"REG","team":"DET","gamesPlayed":1,"values":{"g":1,"ab":1,"r":0,"h":0,"doubles":0,"triples":0,"hr":0,"rbi":0,"sb":0,"bb":0,"so":null,"avg":0,"obp":0,"slg":0,"ops":0},"rowScope":"team"},{"season":1918,"seasonType":"REG","team":"DET","gamesPlayed":1,"values":{"g":1,"ab":0,"r":0,"h":0,"doubles":0,"triples":0,"hr":0,"rbi":0,"sb":0,"bb":0,"so":0,"avg":0,"obp":0,"slg":0,"ops":0},"rowScope":"team"}],"careerTotals":{"REG":{"g":1288,"ab":4904,"r":994,"h":1528,"doubles":232,"triples":88,"hr":18,"rbi":840,"sb":341,"bb":347,"so":117,"avg":0.312,"obp":0.39,"slg":0.406,"ops":0.796}}},{"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":1891,"seasonType":"REG","team":"Louisville Colonels","values":{"ops_plus":111,"era_plus":null},"rowScope":"team"},{"season":1892,"seasonType":"REG","team":"Louisville Colonels","values":{"ops_plus":68,"era_plus":null},"rowScope":"team"},{"season":1893,"seasonType":"REG","gamesPlayed":null,"gamesStarted":null,"values":{"ops_plus":null,"era_plus":null},"team":"TOT","rowScope":"total"},{"season":1893,"seasonType":"REG","team":"Baltimore Orioles","values":{"ops_plus":69,"era_plus":null},"rowScope":"team"},{"season":1893,"seasonType":"REG","team":"Louisville Colonels","values":{"ops_plus":-8,"era_plus":null},"rowScope":"team"},{"season":1894,"seasonType":"REG","team":"Baltimore Orioles","values":{"ops_plus":112,"era_plus":null},"rowScope":"team"},{"season":1895,"seasonType":"REG","team":"Baltimore Orioles","values":{"ops_plus":144,"era_plus":null},"rowScope":"team"},{"season":1896,"seasonType":"REG","team":"Baltimore Orioles","values":{"ops_plus":147,"era_plus":null},"rowScope":"team"},{"season":1897,"seasonType":"REG","team":"Baltimore Orioles","values":{"ops_plus":140,"era_plus":null},"rowScope":"team"},{"season":1898,"seasonType":"REG","team":"Baltimore Orioles","values":{"ops_plus":148,"era_plus":null},"rowScope":"team"},{"season":1899,"seasonType":"REG","gamesPlayed":null,"gamesStarted":null,"values":{"ops_plus":null,"era_plus":null},"team":"TOT","rowScope":"total"},{"season":1899,"seasonType":"REG","team":"Baltimore Orioles","values":{"ops_plus":251,"era_plus":null},"rowScope":"team"},{"season":1899,"seasonType":"REG","team":"LAD","values":{"ops_plus":118,"era_plus":null},"rowScope":"team"},{"season":1900,"seasonType":"REG","team":"LAD","values":{"ops_plus":91,"era_plus":null},"rowScope":"team"},{"season":1901,"seasonType":"REG","team":"PHI","values":{"ops_plus":103,"era_plus":null},"rowScope":"team"},{"season":1902,"seasonType":"REG","team":"PHI","values":{"ops_plus":111,"era_plus":null},"rowScope":"team"},{"season":1903,"seasonType":"REG","team":"LAD","values":{"ops_plus":53,"era_plus":null},"rowScope":"team"},{"season":1907,"seasonType":"REG","team":"DET","values":{"ops_plus":146,"era_plus":null},"rowScope":"team"},{"season":1909,"seasonType":"REG","team":"DET","values":{"ops_plus":231,"era_plus":null},"rowScope":"team"},{"season":1912,"seasonType":"REG","team":"DET","values":{"ops_plus":-100,"era_plus":null},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":116,"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":"2026-07-03T07:40:28.886Z"}