{"sport":"mlb","slug":"jack-lewis","bio":{"fullName":"Jack Lewis","position":"2B","team":null,"heightInches":68,"weightLbs":158,"birthDate":"1884-02-14","rookieSeason":1911,"lastSeason":1915,"status":"RET","externalIds":{"mlbam":"117737","chadwick":"adf523ae","retro":"lewij101","wikidata":"Q6113678"}},"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":1911,"seasonType":"REG","team":"BOS","gamesPlayed":18,"values":{"g":18,"ab":59,"r":7,"h":16,"doubles":0,"triples":0,"hr":0,"rbi":6,"sb":2,"bb":7,"so":null,"avg":0.271,"obp":0.368,"slg":0.271,"ops":0.639},"rowScope":"team"},{"season":1914,"seasonType":"REG","team":"Pittsburgh Rebels","gamesPlayed":117,"values":{"g":117,"ab":394,"r":32,"h":92,"doubles":14,"triples":5,"hr":1,"rbi":48,"sb":9,"bb":17,"so":46,"avg":0.234,"obp":0.276,"slg":0.302,"ops":0.578},"rowScope":"team"},{"season":1915,"seasonType":"REG","team":"Pittsburgh Rebels","gamesPlayed":82,"values":{"g":82,"ab":231,"r":24,"h":61,"doubles":6,"triples":5,"hr":0,"rbi":26,"sb":7,"bb":8,"so":31,"avg":0.264,"obp":0.292,"slg":0.333,"ops":0.625},"rowScope":"team"}],"careerTotals":{"REG":{"g":217,"ab":684,"r":63,"h":169,"doubles":20,"triples":10,"hr":1,"rbi":80,"sb":18,"bb":32,"so":77,"avg":0.247,"obp":0.29,"slg":0.31,"ops":0.6}}},{"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":1911,"seasonType":"REG","team":"BOS","values":{"ops_plus":81,"era_plus":null},"rowScope":"team"},{"season":1914,"seasonType":"REG","team":"Pittsburgh Rebels","values":{"ops_plus":67,"era_plus":null},"rowScope":"team"},{"season":1915,"seasonType":"REG","team":"Pittsburgh Rebels","values":{"ops_plus":89,"era_plus":null},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":76,"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"}