{"sport":"mlb","slug":"john-tener","bio":{"fullName":"John Tener","position":"P","team":null,"heightInches":76,"weightLbs":180,"birthDate":"1863-07-25","rookieSeason":1885,"lastSeason":1890,"status":"RET","externalIds":{"mlbam":"123184","chadwick":"c90d4ea9","retro":"tenej101","wikidata":"Q889250"}},"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":1885,"seasonType":"REG","team":"Baltimore Orioles","gamesPlayed":1,"values":{"g":1,"ab":4,"r":0,"h":0,"doubles":0,"triples":0,"hr":0,"rbi":0,"sb":null,"bb":0,"so":null,"avg":0,"obp":0,"slg":0,"ops":0},"rowScope":"team"},{"season":1888,"seasonType":"REG","team":"CHC","gamesPlayed":12,"values":{"g":12,"ab":46,"r":4,"h":9,"doubles":1,"triples":0,"hr":0,"rbi":1,"sb":1,"bb":1,"so":15,"avg":0.196,"obp":0.229,"slg":0.217,"ops":0.446},"rowScope":"team"},{"season":1889,"seasonType":"REG","team":"CHC","gamesPlayed":42,"values":{"g":42,"ab":150,"r":18,"h":41,"doubles":4,"triples":2,"hr":1,"rbi":19,"sb":2,"bb":7,"so":22,"avg":0.273,"obp":0.306,"slg":0.347,"ops":0.653},"rowScope":"team"},{"season":1890,"seasonType":"REG","team":"Pittsburgh Burghers","gamesPlayed":18,"values":{"g":18,"ab":63,"r":7,"h":12,"doubles":0,"triples":0,"hr":2,"rbi":5,"sb":1,"bb":7,"so":10,"avg":0.19,"obp":0.301,"slg":0.286,"ops":0.587},"rowScope":"team"}],"careerTotals":{"REG":{"g":73,"ab":263,"r":29,"h":62,"doubles":5,"triples":2,"hr":3,"rbi":25,"sb":4,"bb":15,"so":47,"avg":0.236,"obp":0.287,"slg":0.304,"ops":0.591}}},{"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":1888,"seasonType":"REG","team":"CHC","gamesPlayed":12,"values":{"g":12,"gs":12,"w":7,"l":5,"sv":0,"ip":102,"so":39,"bb":25,"h":90,"er":31,"hr":6,"era":2.74,"whip":1.13},"rowScope":"team"},{"season":1889,"seasonType":"REG","team":"CHC","gamesPlayed":35,"values":{"g":35,"gs":30,"w":15,"l":15,"sv":0,"ip":287,"so":105,"bb":105,"h":302,"er":116,"hr":16,"era":3.64,"whip":1.42},"rowScope":"team"},{"season":1890,"seasonType":"REG","team":"Pittsburgh Burghers","gamesPlayed":14,"values":{"g":14,"gs":14,"w":3,"l":11,"sv":0,"ip":117,"so":30,"bb":70,"h":160,"er":95,"hr":6,"era":7.31,"whip":1.97},"rowScope":"team"}],"careerTotals":{"REG":{"g":61,"gs":56,"w":25,"l":31,"sv":0,"ip":506,"so":174,"bb":200,"h":552,"er":242,"hr":28,"era":4.3,"whip":1.49}}},{"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":1885,"seasonType":"REG","team":"Baltimore Orioles","values":{"ops_plus":-100,"era_plus":null},"rowScope":"team"},{"season":1888,"seasonType":"REG","team":"CHC","values":{"ops_plus":43,"era_plus":105},"rowScope":"team"},{"season":1889,"seasonType":"REG","team":"CHC","values":{"ops_plus":89,"era_plus":110},"rowScope":"team"},{"season":1890,"seasonType":"REG","team":"Pittsburgh Burghers","values":{"ops_plus":56,"era_plus":59},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":71,"era_plus":91}},"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":"2026-07-03T08:11:48.216Z"}