{"sport":"mlb","slug":"lou-bierbauer","bio":{"fullName":"Lou Bierbauer","position":"2B","team":"STL","heightInches":68,"weightLbs":140,"birthDate":"1865-09-28","rookieSeason":1886,"lastSeason":1898,"status":"RET","externalIds":{"mlbam":"110981","chadwick":"dba34ddd","retro":"bierl101","wikidata":"Q6685386"}},"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":1886,"seasonType":"REG","team":"Philadelphia Athletics","gamesPlayed":137,"values":{"g":137,"ab":522,"r":56,"h":118,"doubles":17,"triples":5,"hr":2,"rbi":47,"sb":19,"bb":21,"so":null,"avg":0.226,"obp":0.256,"slg":0.289,"ops":0.545},"rowScope":"team"},{"season":1887,"seasonType":"REG","team":"Philadelphia Athletics","gamesPlayed":126,"values":{"g":126,"ab":530,"r":74,"h":144,"doubles":19,"triples":7,"hr":1,"rbi":82,"sb":40,"bb":13,"so":null,"avg":0.272,"obp":0.289,"slg":0.34,"ops":0.629},"rowScope":"team"},{"season":1888,"seasonType":"REG","team":"Philadelphia Athletics","gamesPlayed":134,"values":{"g":134,"ab":535,"r":83,"h":143,"doubles":20,"triples":9,"hr":0,"rbi":80,"sb":34,"bb":25,"so":null,"avg":0.267,"obp":0.301,"slg":0.338,"ops":0.639},"rowScope":"team"},{"season":1889,"seasonType":"REG","team":"Philadelphia Athletics","gamesPlayed":130,"values":{"g":130,"ab":549,"r":80,"h":167,"doubles":27,"triples":7,"hr":7,"rbi":105,"sb":17,"bb":29,"so":30,"avg":0.304,"obp":0.344,"slg":0.417,"ops":0.761},"rowScope":"team"},{"season":1890,"seasonType":"REG","team":"Brooklyn Wonders","gamesPlayed":133,"values":{"g":133,"ab":589,"r":128,"h":180,"doubles":31,"triples":11,"hr":7,"rbi":99,"sb":16,"bb":40,"so":15,"avg":0.306,"obp":0.35,"slg":0.431,"ops":0.781},"rowScope":"team"},{"season":1891,"seasonType":"REG","team":"PIT","gamesPlayed":121,"values":{"g":121,"ab":500,"r":60,"h":103,"doubles":13,"triples":6,"hr":1,"rbi":47,"sb":12,"bb":28,"so":19,"avg":0.206,"obp":0.252,"slg":0.262,"ops":0.514},"rowScope":"team"},{"season":1892,"seasonType":"REG","team":"PIT","gamesPlayed":152,"values":{"g":152,"ab":649,"r":81,"h":153,"doubles":20,"triples":9,"hr":8,"rbi":65,"sb":11,"bb":25,"so":29,"avg":0.236,"obp":0.264,"slg":0.331,"ops":0.595},"rowScope":"team"},{"season":1893,"seasonType":"REG","team":"PIT","gamesPlayed":128,"values":{"g":128,"ab":528,"r":84,"h":150,"doubles":19,"triples":11,"hr":4,"rbi":94,"sb":11,"bb":36,"so":12,"avg":0.284,"obp":0.335,"slg":0.384,"ops":0.719},"rowScope":"team"},{"season":1894,"seasonType":"REG","team":"PIT","gamesPlayed":130,"values":{"g":130,"ab":525,"r":86,"h":159,"doubles":19,"triples":13,"hr":3,"rbi":107,"sb":19,"bb":26,"so":9,"avg":0.303,"obp":0.337,"slg":0.406,"ops":0.743},"rowScope":"team"},{"season":1895,"seasonType":"REG","team":"PIT","gamesPlayed":117,"values":{"g":117,"ab":466,"r":53,"h":120,"doubles":13,"triples":11,"hr":0,"rbi":69,"sb":18,"bb":19,"so":8,"avg":0.258,"obp":0.29,"slg":0.333,"ops":0.623},"rowScope":"team"},{"season":1896,"seasonType":"REG","team":"PIT","gamesPlayed":59,"values":{"g":59,"ab":258,"r":33,"h":74,"doubles":10,"triples":6,"hr":0,"rbi":39,"sb":7,"bb":5,"so":7,"avg":0.287,"obp":0.3,"slg":0.372,"ops":0.672},"rowScope":"team"},{"season":1897,"seasonType":"REG","team":"STL","gamesPlayed":12,"values":{"g":12,"ab":46,"r":1,"h":10,"doubles":0,"triples":0,"hr":0,"rbi":1,"sb":2,"bb":0,"so":null,"avg":0.217,"obp":0.217,"slg":0.217,"ops":0.434},"rowScope":"team"},{"season":1898,"seasonType":"REG","team":"STL","gamesPlayed":4,"values":{"g":4,"ab":9,"r":0,"h":0,"doubles":0,"triples":0,"hr":0,"rbi":0,"sb":0,"bb":1,"so":null,"avg":0,"obp":0.1,"slg":0,"ops":0.1},"rowScope":"team"}],"careerTotals":{"REG":{"g":1383,"ab":5706,"r":819,"h":1521,"doubles":208,"triples":95,"hr":33,"rbi":835,"sb":206,"bb":268,"so":129,"avg":0.267,"obp":0.301,"slg":0.354,"ops":0.655}}},{"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":1886,"seasonType":"REG","team":"Philadelphia Athletics","gamesPlayed":2,"values":{"g":2,"gs":0,"w":0,"l":0,"sv":0,"ip":10.2,"so":1,"bb":5,"h":8,"er":5,"hr":0,"era":4.22,"whip":1.22},"rowScope":"team"},{"season":1887,"seasonType":"REG","team":"Philadelphia Athletics","gamesPlayed":1,"values":{"g":1,"gs":0,"w":0,"l":0,"sv":1,"ip":1,"so":1,"bb":0,"h":0,"er":0,"hr":0,"era":0,"whip":0},"rowScope":"team"},{"season":1888,"seasonType":"REG","team":"Philadelphia Athletics","gamesPlayed":1,"values":{"g":1,"gs":0,"w":0,"l":0,"sv":0,"ip":3,"so":3,"bb":0,"h":5,"er":0,"hr":0,"era":0,"whip":1.67},"rowScope":"team"}],"careerTotals":{"REG":{"g":4,"gs":0,"w":0,"l":0,"sv":1,"ip":14.2,"so":5,"bb":5,"h":13,"er":5,"hr":0,"era":3.07,"whip":1.23}}},{"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":1886,"seasonType":"REG","team":"Philadelphia Athletics","values":{"ops_plus":82,"era_plus":83},"rowScope":"team"},{"season":1887,"seasonType":"REG","team":"Philadelphia Athletics","values":{"ops_plus":77,"era_plus":null},"rowScope":"team"},{"season":1888,"seasonType":"REG","team":"Philadelphia Athletics","values":{"ops_plus":112,"era_plus":null},"rowScope":"team"},{"season":1889,"seasonType":"REG","team":"Philadelphia Athletics","values":{"ops_plus":122,"era_plus":null},"rowScope":"team"},{"season":1890,"seasonType":"REG","team":"Brooklyn Wonders","values":{"ops_plus":117,"era_plus":null},"rowScope":"team"},{"season":1891,"seasonType":"REG","team":"PIT","values":{"ops_plus":55,"era_plus":null},"rowScope":"team"},{"season":1892,"seasonType":"REG","team":"PIT","values":{"ops_plus":86,"era_plus":null},"rowScope":"team"},{"season":1893,"seasonType":"REG","team":"PIT","values":{"ops_plus":96,"era_plus":null},"rowScope":"team"},{"season":1894,"seasonType":"REG","team":"PIT","values":{"ops_plus":83,"era_plus":null},"rowScope":"team"},{"season":1895,"seasonType":"REG","team":"PIT","values":{"ops_plus":64,"era_plus":null},"rowScope":"team"},{"season":1896,"seasonType":"REG","team":"PIT","values":{"ops_plus":83,"era_plus":null},"rowScope":"team"},{"season":1897,"seasonType":"REG","team":"STL","values":{"ops_plus":19,"era_plus":null},"rowScope":"team"},{"season":1898,"seasonType":"REG","team":"STL","values":{"ops_plus":-69,"era_plus":null},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":89,"era_plus":83}},"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"}