{"sport":"mlb","slug":"willie-clark","bio":{"fullName":"Willie Clark","position":"1B","team":"PIT","heightInches":72,"weightLbs":195,"birthDate":"1870-08-16","rookieSeason":1895,"lastSeason":1899,"status":"RET","externalIds":{"mlbam":"112346","chadwick":"7cb995f5","retro":"clarw104","wikidata":"Q8021431"}},"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":1895,"seasonType":"REG","team":"SF","gamesPlayed":23,"values":{"g":23,"ab":88,"r":9,"h":23,"doubles":3,"triples":2,"hr":0,"rbi":16,"sb":1,"bb":5,"so":6,"avg":0.261,"obp":0.301,"slg":0.341,"ops":0.642},"rowScope":"team"},{"season":1896,"seasonType":"REG","team":"SF","gamesPlayed":72,"values":{"g":72,"ab":247,"r":38,"h":72,"doubles":12,"triples":4,"hr":0,"rbi":33,"sb":8,"bb":15,"so":12,"avg":0.291,"obp":0.352,"slg":0.372,"ops":0.724},"rowScope":"team"},{"season":1897,"seasonType":"REG","team":"SF","gamesPlayed":116,"values":{"g":116,"ab":431,"r":63,"h":122,"doubles":17,"triples":12,"hr":1,"rbi":75,"sb":18,"bb":37,"so":null,"avg":0.283,"obp":0.352,"slg":0.385,"ops":0.737},"rowScope":"team"},{"season":1898,"seasonType":"REG","team":"PIT","gamesPlayed":57,"values":{"g":57,"ab":209,"r":29,"h":64,"doubles":9,"triples":7,"hr":1,"rbi":31,"sb":0,"bb":22,"so":null,"avg":0.306,"obp":0.378,"slg":0.431,"ops":0.809},"rowScope":"team"},{"season":1899,"seasonType":"REG","team":"PIT","gamesPlayed":80,"values":{"g":80,"ab":298,"r":49,"h":85,"doubles":13,"triples":10,"hr":0,"rbi":44,"sb":11,"bb":35,"so":null,"avg":0.285,"obp":0.379,"slg":0.396,"ops":0.775},"rowScope":"team"}],"careerTotals":{"REG":{"g":348,"ab":1273,"r":188,"h":366,"doubles":54,"triples":35,"hr":2,"rbi":199,"sb":38,"bb":114,"so":18,"avg":0.288,"obp":0.359,"slg":0.39,"ops":0.749}}},{"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":1895,"seasonType":"REG","team":"SF","values":{"ops_plus":70,"era_plus":null},"rowScope":"team"},{"season":1896,"seasonType":"REG","team":"SF","values":{"ops_plus":92,"era_plus":null},"rowScope":"team"},{"season":1897,"seasonType":"REG","team":"SF","values":{"ops_plus":98,"era_plus":null},"rowScope":"team"},{"season":1898,"seasonType":"REG","team":"PIT","values":{"ops_plus":138,"era_plus":null},"rowScope":"team"},{"season":1899,"seasonType":"REG","team":"PIT","values":{"ops_plus":116,"era_plus":null},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":105,"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":"2026-07-03T08:01:23.026Z"}