Page Information
Current Status
High Level
Proper Name
John Robert Stefero
Stat Years
1979-1990  [mlb] 1983-1987
Height/Weight
5-8 / 185
Bats/Throws
Left / Right
Positions
C (672) ... OF (24) ... 3B (9) ... 1B (6) ... 2B (1)
Draft Position
C
Born Date/Place
High School
Mount Saint Joseph (Baltimore,MD)
Colleges
Motlow State Community College (Lynchburg, Tennessee)
Draft
Signed as undrafted free agent by the Baltimore Orioles in 1979
Bonus
Signing Scouts
MLB Debut
1983-06-24 - Boxscore  (Age: 23.276)
Service Time
Organizations
BAL [7] MON [1] CLE [1] CHN [1]
ID Numbers
tbc id: 18411 ... retro id: stefj001 ... mlbam id: 122715
Relations
Pitch Repertoire
TBC Apps
Career Talent RatingsBattingSpeed14Power69Contact28XBH66RBIs55Runs37Hitting39Durability52Team.493Ratings Explained
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Career Batting Statistics

top csv share Sort Research Applications: MLB Stats | Minor Stats | College Stats | Draft Research
  • Grid Filters
  • MLB
  • Minors
  • Full Season
  • Short Season
  • AAA
  • AA
  • A+
  • A
  • A-
  • Rookie
  • College
  • Indy/Intl/+
  • YearTeam NameLgLvlOrgUnifAgePosDetailExpGABRH2B3BHRRBISBCSBBSOHPSHSFIWDPAVGOBPSLGOPSPATBXBHsecAISObabipBB%SO%SOBBABHRHR%XBH%
    1979Bluefield OriolesAppRkbal-19c---159200375511284220223514500.275.342.470.8122329421.315.195.2909.4815.091.5925.03.4538.2
    1980Miami OriolesFSLA+bal-20c---210130732669453011367310400.215.296.319.6153489818.221.104.26210.3420.982.0361.41.4427.3
    1981Hagerstown SunsCaroA+----21c---31113386997162258240788802390.287.418.568.98642119243.524.281.31618.5320.901.1313.55.9444.3
    1982Charlotte O'sSouAAbal-22c---4115357458292176002498541440.230.326.409.73541514628.311.179.25111.8120.481.7321.04.1034.2
    1983Charlotte O'sSouAAbal-23c---561205336390163400333812110.307.404.585.98924212025.439.278.30913.6415.701.1512.86.6139.7
    1983Rochester Red WingsILAAAbal-23c---535971319502500172701110.196.313.309.622116307.289.113.24614.6623.281.5948.51.7236.8
    1983Baltimore OriolesALMLBbal923cL-S-E-P5911251004003200000.455.571.5451.1161461.364.090.55621.4314.290.670.00.0020.0
    1984Hagerstown SunsCaroA+bal-24c---6411349283011701243600300.209.323.254.577161344.216.045.27014.9122.361.50134.00.6214.3
    1984Charlotte O'sSouAAbal-24c---65116425346171400284110010.207.326.384.7101936314.348.177.23314.5121.241.4623.43.6341.2
    1984Rochester Red WingsILAAAbal-24c---6515010001003800100.067.211.067.2781910.200.000.12515.7942.112.670.00.000.0
    1985Charlotte O'sSouAAbal-25c---75716931378071900334101220.219.343.391.7342056615.367.172.24416.1020.001.2424.13.4140.5
    1985Rochester Red WingsILAAAbal-25c---749128162450102300163702210.188.274.461.7351485915.398.273.16910.8125.002.3112.86.7662.5
    1986Rochester Red WingsILAAAbal-26c---82562816102701132000020.258.387.371.75875233.306.113.35017.3326.671.5431.02.6718.8
    1986Baltimore OriolesALMLBbal2126cL-S-E-P85212014282021301162500101.233.321.300.621137364.192.067.27711.6818.251.5660.01.4614.3
    1987Indianapolis IndiansAmerAAAmon-273b---96016725446171900193010100.263.340.437.7771887314.287.174.28210.1115.961.5823.93.7231.8
    1987Montreal ExposNLMLBmon1927cL-S-E-P9185641100130031700012.196.237.250.48759141.107.054.2635.0828.815.6756.01.699.1
    1988Colorado Springs Sky SoxPCLAAAcle-28c---1062179113610031603224611210.201.289.307.5962055513.212.106.25010.7322.442.0959.71.4636.1
    1990Charlotte KnightsSouAAchn-30c---11571269245111500102820000.190.261.270.531138347.159.080.2377.2520.292.80126.00.7229.2
    MLB Totals (3 yrs)7918720443032001224400113.235.314.299.613210566.176.064.29110.4820.952.0062.31.4313.6
    American League Totals (2 yrs)6113116333021701192700101.252.344.321.665151425.206.069.30112.5817.881.4265.51.3215.1
    National League Totals (1 yrs)185641100130031700012.196.237.250.48759141.107.054.2635.0828.815.6756.01.699.1
    Minor League Totals88926483636261031311138478403633121429220.236.337.411.74831061088227.326.175.26612.9720.381.5723.93.5736.3
    Minor: Rk Totals59200375511284220223514500.275.342.470.8122329421.315.195.2909.4815.091.5925.03.4538.2
    Minor: A+ Totals2537791101912863112952138197121090.245.356.416.77293032465.352.171.28514.8421.181.4325.13.3334.0
    Minor: AA Totals3411021143240374481420215323384780.235.337.420.757119342989.333.185.25712.8219.531.5221.34.0237.1
    Minor: AAA Totals236648731402712471049016824750.216.311.372.68375124152.289.156.25111.9822.371.8727.03.2037.1
    Baltimore Orioles Totals (2 yrs)6113116333021701192700101.252.344.321.665151425.206.069.30112.5817.881.4265.51.3215.1
    Montreal Expos Totals (1 yrs)185641100130031700012.196.237.250.48759141.107.054.2635.0828.815.6756.01.699.1
    Glossary:
    Year Context-dependent but usually self-evident. (Season, Draft Year etc) Team Name Contextual to the grid but usually self-evident. Draft = Drafted team. Lg League Org Major League Parent Organization. For college teams, might include RPI (Ratings Percentage Index) Unif Uniform Number, if available Age Player's age for the selected season or as of a current date if in YY.DDD format. Pos Defensive Position Detail Includes links to additional MLB stat detail including Game Logs, Splits and Extended Statistics Exp Experience in # of years. For Player stats, refers to nth PRO season. Count is ontextual to the purpose of the grid G Games Played (or Pitched) AB At Bats R Runs H Hits 2B Doubles 3B Triples HR Home Runs RBI Runs Batted In SB Stolen Bases (Total) CS Caught Stealings BB Walks SO Strikeouts HP Hit by Pitch SH Sacrifice Hits SF Sacrifice Flies IW Intentional Walks DP Grounded into Double Play (Offense) Double Plays Participation (Defense) AVG Batting Average ( H/AB ) OBP On Base Percentage ( H+BB+HBP / (AB+BB+HBP+SF) SLG Slugging Percentage ( TB / AB ) OPS On Base Plus Slugging (OBP + SLG) PA Plate Appearances TB Total Bases (Singles + (2*Doubles) + (3*Triples) + (4*Home Runs)) XBH Extra Base Hits (Doubles+Triples+Home Runs) secA Seconday Average. Measures extra bases earned by player (BB+(TB-H)+(SB-CS) / AB ISO Isolated Power. Measures the portion of a slugging percentage that is for extra base hits. (SLG-BAVG). babip Batting Average on Balls Put in Play. (H/(AB-SO)) XBH% Extra Base Hit Percentage (XBH/H)

    Career Fielding Statistics

    top csv share Sort Research Applications: MLB Stats | Minor Stats | College Stats | Draft Research
  • Grid Filters
  • MLB
  • Minors
  • Full Season
  • Short Season
  • AAA
  • AA
  • A+
  • A
  • A-
  • Rookie
  • YearTeam NameLgLvlAgepositGGSINNPOAEDPTCTSCFPCTRFGRFITeam SharePlayer ShareTeam Rank
    1979Bluefield OriolesAppRk19C500.0245103029.9675.800.007.48.53
    1980Miami OriolesFSLA+20C8100.035263146429415.9675.100.0059.680.21
    1981Hagerstown SunsCaroA+21C9300.0628711610715699.9787.500.0067.483.81
    1981Hagerstown SunsCaroA+213B100.00100111.0001.000.000.70.96
    1981Hagerstown SunsCaroA+21OF100.02200441.0004.000.000.70.911
    1982Charlotte O'sSouAA22C7800.039647152458443.9675.700.0054.567.81
    1982Charlotte O'sSouAA223B700.0341187.8751.000.004.96.15
    1982Charlotte O'sSouAA22OF1800.0360103736.9732.000.0012.615.77
    1983Charlotte O'sSouAA23C5100.026140121313301.9625.900.0034.983.62
    1983Rochester Red WingsILAAA23C3200.01532642183179.9785.600.0022.991.43
    1983Baltimore OriolesALMLB23C9031.2203202523.9202.600.745.6100.03
    1984Hagerstown SunsCaroA+24C2900.01642020186184.9896.300.0020.770.72
    1984Hagerstown SunsCaroA+24OF300.07100881.0002.700.002.17.314
    1984Charlotte O'sSouAA24C3800.01953032228225.9875.900.0025.974.52
    1984Rochester Red WingsILAAA24C500.0181202119.9053.800.003.6100.04
    1985Charlotte O'sSouAA25C4100.020030032302301.0005.600.0028.771.92
    1985Charlotte O'sSouAA25OF200.03000331.0001.500.001.43.513
    1985Rochester Red WingsILAAA25C4700.01922440220216.9824.600.0033.895.92
    1986Rochester Red WingsILAAA26C2400.011713001301301.0005.400.0017.496.03
    1986Baltimore OriolesALMLB26C500321.12212042245241.9844.800.7530.996.22
    1986Baltimore OriolesALMLB262B100.0000000.0000.000.000.61.96
    1987Indianapolis IndiansAmerAAA273B100.0001010.0000.000.000.71.75
    1987Montreal ExposNLMLB27C170122.1901220104102.9816.000.8410.594.43
    1988Colorado Springs Sky SoxPCLAAA28C5600.02383674281274.9754.900.0040.390.31
    1990Charlotte KnightsSouAA30C1600.0877219694.9795.900.0011.128.13
    1990Charlotte KnightsSouAA301B600.03130234341.0005.700.004.210.55
    MLB Totals - (C)760474331358215.0000.000.00---------
    MLB Totals - (2B)100000000.0000.000.00---------
    AAA Totals - (C)1640071810017615.0000.000.00---------
    AAA Totals - (3B)100001000.0000.000.00---------
    AA Totals - (C)22400113915432916.0000.000.00---------
    AA Totals - (1B)6003130216.0000.000.00---------
    AA Totals - (3B)700341111.0000.000.00---------
    AA Totals - (OF)20003901012.0000.000.00---------
    A+ Totals - (C)203001144154321616.0000.000.00---------
    A+ Totals - (3B)100010011.0000.000.00---------
    A+ Totals - (OF)400930013.0000.000.00---------
    Rk Totals - (C)5002451016.0000.000.00---------
    Glossary:
    Year Context-dependent but usually self-evident. (Season, Draft Year etc) Team Name Contextual to the grid but usually self-evident. Draft = Drafted team. Lg League Age Player's age for the selected season or as of a current date if in YY.DDD format. G Games Played (or Pitched) GS Games Started Inn Innings in a game or Innings played at position PO Putouts A Fielding assists E Errors DP Grounded into Double Play (Offense) Double Plays Participation (Defense) TC Total Chances (PO+A+E) TSC Total Successful Chances (PO+A) FPCT Fielding Percentage (TSC/TC) RFg Range Factor by Game (Total Successful Chances/Games) Rfi Range Factor by Inning (Total Successful Chances/Innings) Team Share Share of team's games played at that position. Will add up to more than 100% since the formula is player games at position / team games. Player Share Share of player's games played at that position Team Rank Rank of games for team at that position.

    Fielding Positional Grid by Year

    top csv share Sort Research Applications: MLB Stats | Minor Stats | College Stats | Draft Research
    YearCategoryPC1B2B3BSSLFCFRFOFDH
    1979Minor-5---------
    1980Minor-81---------
    1981Minor-93--1----1-
    1982Minor-78--7----18-
    1983MLB-9---------
    1983Minor-83---------
    1984Minor-72-------3-
    1985Minor-88-------2-
    1986MLB-50-1-------
    1986Minor-24---------
    1987MLB-17---------
    1987Minor----1------
    1988Minor-56---------
    1990Minor-166--------
    Totals-672619----24-