{"sport":"mlb","slug":"mike-rivera","bio":{"fullName":"Mike Rivera","position":"C","team":"MIL","heightInches":73,"weightLbs":220,"birthDate":"1976-09-08","rookieSeason":2001,"lastSeason":2011,"status":"RET","externalIds":{"mlbam":"407576","chadwick":"08776f46","retro":"rivem003","wikidata":"Q3313520"}},"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":2001,"seasonType":"REG","team":"DET","gamesPlayed":4,"values":{"g":4,"ab":12,"r":2,"h":4,"doubles":2,"triples":0,"hr":0,"rbi":1,"sb":0,"bb":0,"so":2,"avg":0.333,"obp":0.333,"slg":0.5,"ops":0.833},"rowScope":"team"},{"season":2002,"seasonType":"REG","team":"DET","gamesPlayed":39,"values":{"g":39,"ab":132,"r":11,"h":30,"doubles":8,"triples":1,"hr":1,"rbi":11,"sb":0,"bb":4,"so":35,"avg":0.227,"obp":0.254,"slg":0.326,"ops":0.58},"rowScope":"team"},{"season":2003,"seasonType":"REG","team":"SD","gamesPlayed":19,"values":{"g":19,"ab":53,"r":2,"h":9,"doubles":1,"triples":0,"hr":1,"rbi":2,"sb":0,"bb":5,"so":11,"avg":0.17,"obp":0.241,"slg":0.245,"ops":0.486},"rowScope":"team"},{"season":2006,"seasonType":"REG","team":"MIL","gamesPlayed":46,"values":{"g":46,"ab":142,"r":16,"h":38,"doubles":9,"triples":0,"hr":6,"rbi":24,"sb":0,"bb":10,"so":21,"avg":0.268,"obp":0.325,"slg":0.458,"ops":0.783},"rowScope":"team"},{"season":2007,"seasonType":"REG","team":"MIL","gamesPlayed":11,"values":{"g":11,"ab":13,"r":2,"h":3,"doubles":0,"triples":0,"hr":2,"rbi":3,"sb":0,"bb":1,"so":3,"avg":0.231,"obp":0.286,"slg":0.692,"ops":0.978},"rowScope":"team"},{"season":2008,"seasonType":"REG","team":"MIL","gamesPlayed":21,"values":{"g":21,"ab":62,"r":8,"h":19,"doubles":5,"triples":0,"hr":1,"rbi":14,"sb":2,"bb":6,"so":10,"avg":0.306,"obp":0.377,"slg":0.435,"ops":0.812},"rowScope":"team"},{"season":2009,"seasonType":"REG","team":"MIL","gamesPlayed":41,"values":{"g":41,"ab":114,"r":10,"h":26,"doubles":7,"triples":0,"hr":2,"rbi":14,"sb":1,"bb":15,"so":32,"avg":0.228,"obp":0.326,"slg":0.342,"ops":0.668},"rowScope":"team"},{"season":2010,"seasonType":"REG","team":"MIA","gamesPlayed":7,"values":{"g":7,"ab":14,"r":0,"h":0,"doubles":0,"triples":0,"hr":0,"rbi":0,"sb":0,"bb":2,"so":3,"avg":0,"obp":0.176,"slg":0,"ops":0.176},"rowScope":"team"},{"season":2011,"seasonType":"REG","team":"MIL","gamesPlayed":1,"values":{"g":1,"ab":6,"r":0,"h":2,"doubles":0,"triples":0,"hr":0,"rbi":0,"sb":0,"bb":0,"so":1,"avg":0.333,"obp":0.333,"slg":0.333,"ops":0.666},"rowScope":"team"}],"careerTotals":{"REG":{"g":189,"ab":548,"r":51,"h":131,"doubles":32,"triples":1,"hr":13,"rbi":69,"sb":3,"bb":43,"so":118,"avg":0.239,"obp":0.302,"slg":0.372,"ops":0.674}}},{"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":2001,"seasonType":"REG","team":"DET","values":{"ops_plus":119,"era_plus":null},"rowScope":"team"},{"season":2002,"seasonType":"REG","team":"DET","values":{"ops_plus":53,"era_plus":null},"rowScope":"team"},{"season":2003,"seasonType":"REG","team":"SD","values":{"ops_plus":34,"era_plus":null},"rowScope":"team"},{"season":2006,"seasonType":"REG","team":"MIL","values":{"ops_plus":103,"era_plus":null},"rowScope":"team"},{"season":2007,"seasonType":"REG","team":"MIL","values":{"ops_plus":150,"era_plus":null},"rowScope":"team"},{"season":2008,"seasonType":"REG","team":"MIL","values":{"ops_plus":118,"era_plus":null},"rowScope":"team"},{"season":2009,"seasonType":"REG","team":"MIL","values":{"ops_plus":81,"era_plus":null},"rowScope":"team"},{"season":2010,"seasonType":"REG","team":"MIA","values":{"ops_plus":-61,"era_plus":null},"rowScope":"team"},{"season":2011,"seasonType":"REG","team":"MIL","values":{"ops_plus":90,"era_plus":null},"rowScope":"team"}],"careerTotals":{"REG":{"ops_plus":79,"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":"2026-07-03T02:05:56.096Z"}