{"sport":"mlb","slug":"allan-anderson","bio":{"fullName":"Allan Anderson","position":"P","team":"MIN","heightInches":71,"weightLbs":186,"birthDate":"1964-01-07","rookieSeason":1986,"lastSeason":1991,"status":"RET","externalIds":{"mlbam":"110226","chadwick":"8dd4c472","retro":"andea001","wikidata":"Q4730455"}},"draft":{"year":1982,"round":null,"pick":null,"team":null,"undrafted":false},"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":1986,"seasonType":"REG","team":"MIN","gamesPlayed":22,"values":{"g":22,"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"},{"season":1989,"seasonType":"REG","team":"MIN","gamesPlayed":34,"values":{"g":34,"ab":1,"r":0,"h":0,"doubles":0,"triples":0,"hr":0,"rbi":0,"sb":0,"bb":0,"so":1,"avg":0,"obp":0,"slg":0,"ops":0},"rowScope":"team"},{"season":1991,"seasonType":"REG","team":"MIN","gamesPlayed":29,"values":{"g":29,"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":150,"ab":1,"r":0,"h":0,"doubles":0,"triples":0,"hr":0,"rbi":0,"sb":0,"bb":0,"so":1,"avg":0,"obp":0,"slg":0,"ops":0}}},{"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":1986,"seasonType":"REG","team":"MIN","gamesPlayed":21,"values":{"g":21,"gs":10,"w":3,"l":6,"sv":0,"ip":84.1,"so":51,"bb":30,"h":106,"er":52,"hr":11,"era":5.55,"whip":1.61},"rowScope":"team"},{"season":1987,"seasonType":"REG","team":"MIN","gamesPlayed":4,"values":{"g":4,"gs":2,"w":1,"l":0,"sv":0,"ip":12.1,"so":3,"bb":10,"h":20,"er":15,"hr":3,"era":10.95,"whip":2.43},"rowScope":"team"},{"season":1988,"seasonType":"REG","team":"MIN","gamesPlayed":30,"values":{"g":30,"gs":30,"w":16,"l":9,"sv":0,"ip":202.1,"so":83,"bb":37,"h":199,"er":55,"hr":14,"era":2.45,"whip":1.17},"rowScope":"team"},{"season":1989,"seasonType":"REG","team":"MIN","gamesPlayed":33,"values":{"g":33,"gs":33,"w":17,"l":10,"sv":0,"ip":196.2,"so":69,"bb":53,"h":214,"er":83,"hr":15,"era":3.8,"whip":1.36},"rowScope":"team"},{"season":1990,"seasonType":"REG","team":"MIN","gamesPlayed":31,"values":{"g":31,"gs":31,"w":7,"l":18,"sv":0,"ip":188.2,"so":82,"bb":39,"h":214,"er":95,"hr":20,"era":4.53,"whip":1.34},"rowScope":"team"},{"season":1991,"seasonType":"REG","team":"MIN","gamesPlayed":29,"values":{"g":29,"gs":22,"w":5,"l":11,"sv":0,"ip":134.1,"so":51,"bb":42,"h":148,"er":74,"hr":24,"era":4.96,"whip":1.41},"rowScope":"team"}],"careerTotals":{"REG":{"g":148,"gs":128,"w":49,"l":54,"sv":0,"ip":818.2,"so":339,"bb":211,"h":901,"er":374,"hr":87,"era":4.11,"whip":1.36}}},{"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":1986,"seasonType":"REG","team":"MIN","values":{"ops_plus":null,"era_plus":73},"rowScope":"team"},{"season":1987,"seasonType":"REG","team":"MIN","values":{"ops_plus":null,"era_plus":40},"rowScope":"team"},{"season":1988,"seasonType":"REG","team":"MIN","values":{"ops_plus":null,"era_plus":163},"rowScope":"team"},{"season":1989,"seasonType":"REG","team":"MIN","values":{"ops_plus":-100,"era_plus":104},"rowScope":"team"},{"season":1990,"seasonType":"REG","team":"MIN","values":{"ops_plus":null,"era_plus":86},"rowScope":"team"},{"season":1991,"seasonType":"REG","team":"MIN","values":{"ops_plus":null,"era_plus":81},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":-100,"era_plus":97}},"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":"2026-07-03T02:37:06.742Z"}