{"sport":"mlb","slug":"sanford-jackson","bio":{"fullName":"Sanford Jackson","position":"X","team":null,"heightInches":66,"weightLbs":165,"birthDate":"1900-01-10","rookieSeason":1924,"lastSeason":1932,"status":"RET","externalIds":{"mlbam":"818849","chadwick":"4b4caaca","retro":"jacks103","wikidata":"Q7598758"}},"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":1924,"seasonType":"REG","team":"Memphis Red Sox","gamesPlayed":52,"values":{"g":52,"ab":184,"r":40,"h":49,"doubles":6,"triples":2,"hr":0,"rbi":12,"sb":9,"bb":18,"so":null,"avg":0.266,"obp":0.341,"slg":0.321,"ops":0.662},"rowScope":"team"},{"season":1925,"seasonType":"REG","team":"Memphis Red Sox","gamesPlayed":59,"values":{"g":59,"ab":216,"r":45,"h":61,"doubles":9,"triples":0,"hr":0,"rbi":21,"sb":15,"bb":29,"so":null,"avg":0.282,"obp":0.372,"slg":0.324,"ops":0.696},"rowScope":"team"},{"season":1926,"seasonType":"REG","team":"Chicago American Giants","gamesPlayed":81,"values":{"g":81,"ab":293,"r":41,"h":58,"doubles":9,"triples":4,"hr":1,"rbi":30,"sb":10,"bb":15,"so":null,"avg":0.198,"obp":0.239,"slg":0.266,"ops":0.505},"rowScope":"team"},{"season":1927,"seasonType":"REG","team":"Chicago American Giants","gamesPlayed":81,"values":{"g":81,"ab":297,"r":40,"h":79,"doubles":6,"triples":2,"hr":0,"rbi":18,"sb":8,"bb":17,"so":null,"avg":0.266,"obp":0.31,"slg":0.3,"ops":0.61},"rowScope":"team"},{"season":1928,"seasonType":"REG","team":"Chicago American Giants","gamesPlayed":56,"values":{"g":56,"ab":219,"r":32,"h":60,"doubles":4,"triples":4,"hr":0,"rbi":16,"sb":5,"bb":13,"so":null,"avg":0.274,"obp":0.323,"slg":0.329,"ops":0.652},"rowScope":"team"},{"season":1929,"seasonType":"REG","gamesPlayed":68,"gamesStarted":null,"values":{"g":68,"ab":220,"r":36,"h":60,"doubles":4,"triples":4,"hr":1,"rbi":23,"sb":2,"bb":20,"so":null,"avg":0.273,"slg":0.341,"obp":null,"ops":null},"team":"TOT","rowScope":"total"},{"season":1929,"seasonType":"REG","team":"Chicago American Giants","gamesPlayed":23,"values":{"g":23,"ab":79,"r":10,"h":23,"doubles":0,"triples":0,"hr":0,"rbi":8,"sb":2,"bb":3,"so":null,"avg":0.291,"obp":0.317,"slg":0.291,"ops":0.608},"rowScope":"team"},{"season":1929,"seasonType":"REG","team":"Homestead Grays","gamesPlayed":45,"values":{"g":45,"ab":141,"r":26,"h":37,"doubles":4,"triples":4,"hr":1,"rbi":15,"sb":0,"bb":17,"so":null,"avg":0.262,"obp":0.342,"slg":0.369,"ops":0.711},"rowScope":"team"},{"season":1930,"seasonType":"REG","team":"Chicago American Giants","gamesPlayed":82,"values":{"g":82,"ab":298,"r":47,"h":78,"doubles":9,"triples":5,"hr":0,"rbi":20,"sb":5,"bb":20,"so":null,"avg":0.262,"obp":0.317,"slg":0.326,"ops":0.643},"rowScope":"team"},{"season":1931,"seasonType":"REG","team":"Chicago American Giants","gamesPlayed":19,"values":{"g":19,"ab":68,"r":13,"h":18,"doubles":1,"triples":0,"hr":0,"rbi":3,"sb":2,"bb":4,"so":null,"avg":0.265,"obp":0.306,"slg":0.279,"ops":0.585},"rowScope":"team"},{"season":1932,"seasonType":"REG","team":"Indianapolis ABC's","gamesPlayed":26,"values":{"g":26,"ab":97,"r":16,"h":33,"doubles":1,"triples":6,"hr":0,"rbi":9,"sb":4,"bb":3,"so":null,"avg":0.34,"obp":0.366,"slg":0.474,"ops":0.84},"rowScope":"team"}],"careerTotals":{"REG":{"g":524,"ab":1892,"r":310,"h":496,"doubles":49,"triples":27,"hr":2,"rbi":152,"sb":60,"bb":139,"so":null,"avg":0.262,"obp":0.318,"slg":0.32,"ops":0.638}}},{"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":1924,"seasonType":"REG","team":"Memphis Red Sox","values":{"ops_plus":88,"era_plus":null},"rowScope":"team"},{"season":1925,"seasonType":"REG","team":"Memphis Red Sox","values":{"ops_plus":99,"era_plus":null},"rowScope":"team"},{"season":1926,"seasonType":"REG","team":"Chicago American Giants","values":{"ops_plus":35,"era_plus":null},"rowScope":"team"},{"season":1927,"seasonType":"REG","team":"Chicago American Giants","values":{"ops_plus":72,"era_plus":null},"rowScope":"team"},{"season":1928,"seasonType":"REG","team":"Chicago American Giants","values":{"ops_plus":87,"era_plus":null},"rowScope":"team"},{"season":1929,"seasonType":"REG","gamesPlayed":null,"gamesStarted":null,"values":{"ops_plus":null,"era_plus":null},"team":"TOT","rowScope":"total"},{"season":1929,"seasonType":"REG","team":"Chicago American Giants","values":{"ops_plus":69,"era_plus":null},"rowScope":"team"},{"season":1929,"seasonType":"REG","team":"Homestead Grays","values":{"ops_plus":80,"era_plus":null},"rowScope":"team"},{"season":1930,"seasonType":"REG","team":"Chicago American Giants","values":{"ops_plus":79,"era_plus":null},"rowScope":"team"},{"season":1932,"seasonType":"REG","team":"Indianapolis ABC's","values":{"ops_plus":138,"era_plus":null},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":77,"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":"2026-07-03T07:19:43.364Z"}