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Batting Average (AVG):Divide the
number of base hits by the total number of at bats. If Tony
Gwynn has 600 at bats and has 206 hits |
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His batting
average would be .343 (206/600) |
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Earned Run Average (ERA):Multiply the total number
of earned runs by nine, and divide the results by the total innings
pitched.
Randy Johnson has allowed 67 runs in 220 innings. What's his ERA?
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Multiply 67 by 9:
67x9=603. Divide 603 by 220 (his innings
pitched): 603/220=2.74. That's his
ERA |
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W-L percentage: Divide the
number of games won by the total number of decisions.
Pedro Martinez has a 16-3 record |
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Divide his win total(16) by his total number of decisions
(19):16/19=0.842
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Slugging Percentage (SLG):Divide the total number
of bases of all base hits by the total number of times at bat
Sammy Sosa has 282 total bases and 440 at-bats. |
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Divide 282 by 440 to get his
slugging percentage: 282/440=.641 |
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On-Base Percentage
(OBP):Divide the total number of hits plus Bases on Balls plus
hits by Pitch BY at Bats plus Bases on Balls plus hit by Pitch
plus Sacrifice Flies
In Derek Jeter's 434 at-bats, he has 152 hits, 59 walks, and has
been hit by 9 pitches. He's hit 6 sacrifice flies. |
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So here's the formula to determine his on-base
average:
(152+59+9)/(434+59+9+6)=220/508=.433
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Fielding Average :Divide the total number of
putouts and assists by the total number of putouts, assists and
errors.
Edgardo Alfonzo has 218 putouts and 290 assists, while committing
only 2 errors. |
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So his fielding percentage
is : (218+290)/(218+290+2)=508/510=.996 |
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Magic Numbers:Determine the
number of games yet to be played, add one, then subtract the
number of games ahead in the loss column of the standings from
the closest opponent. So here's Texas' magic number: |
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remaining (50) +1=51. 51-7=44. The Rangers'
magic number to clinch the AL West is 44.
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About Baseball 
