{"sport":"mlb","slug":"ernie-burch","bio":{"fullName":"Ernie Burch","position":"LF","team":"LAD","heightInches":70,"weightLbs":190,"birthDate":"1856-09-09","rookieSeason":1884,"lastSeason":1887,"status":"RET","externalIds":{"mlbam":"111696","chadwick":"d2336c5c","retro":"burce101","wikidata":"Q5394382"}},"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":1884,"seasonType":"REG","team":"Cleveland Spiders","gamesPlayed":32,"values":{"g":32,"ab":124,"r":9,"h":26,"doubles":4,"triples":0,"hr":0,"rbi":7,"sb":null,"bb":5,"so":24,"avg":0.21,"obp":null,"slg":0.242,"ops":null},"rowScope":"team"},{"season":1886,"seasonType":"REG","team":"LAD","gamesPlayed":113,"values":{"g":113,"ab":456,"r":78,"h":119,"doubles":22,"triples":6,"hr":2,"rbi":72,"sb":16,"bb":39,"so":null,"avg":0.261,"obp":0.321,"slg":0.349,"ops":0.67},"rowScope":"team"},{"season":1887,"seasonType":"REG","team":"LAD","gamesPlayed":49,"values":{"g":49,"ab":188,"r":47,"h":55,"doubles":4,"triples":4,"hr":2,"rbi":26,"sb":15,"bb":29,"so":null,"avg":0.293,"obp":0.395,"slg":0.388,"ops":0.783},"rowScope":"team"}],"careerTotals":{"REG":{"g":194,"ab":768,"r":134,"h":200,"doubles":30,"triples":10,"hr":4,"rbi":105,"sb":31,"bb":73,"so":24,"avg":0.26,"obp":0.328,"slg":0.341,"ops":0.669}}},{"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":1884,"seasonType":"REG","team":"Cleveland Spiders","values":{"ops_plus":57,"era_plus":null},"rowScope":"team"},{"season":1886,"seasonType":"REG","team":"LAD","values":{"ops_plus":108,"era_plus":null},"rowScope":"team"},{"season":1887,"seasonType":"REG","team":"LAD","values":{"ops_plus":124,"era_plus":null},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":104,"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":"2026-07-03T08:11:48.216Z"}