- Other Batted In (OBI) - A base runner is driven in by the batter. It's the same thing as an RBI except a player does not get credit for driving himself in with a home run.
- Run Assisted (RAS) - A batter advances a runner to either second or third with a hit, base on balls, hit batsmen, error, sacrifice bunt, or another kind of out. If that runner then scores either during the same at bat or an ensuing at bat, the batter who advanced him is given a Run Assisted.
- Unrewarded Advancement (UNR) - A batter advances a runner, but the runner does not score by the end of the inning.
- Neutral (NEU) - A batter does not advance a runner, but there are no outs on the play. (e.g. a walk with a runner on second).
- Giveaway (GA) - A batter fails to advance a runner and one or more outs are made either at the plate or on the bases.
- Advancement Percentage (ADV%) = ADV/BR
- Advances Above Average (ADVAA) = ADV - lg ADV% * BR
With Neutrals included, about 38% of runners on base are advanced. When Neutrals are removed the success rate increases to 40%. The result is higher Advancement Percentages for individual batters, but the the names on the leader boards don't change much. Table 1 shows that Reds first baseman Joey Votto is the new ADV% leader (among players with 200+ opportunities) at .550. Table 2 tells us that his teammate Zack Cozart is still has the worst percentage (.269).
Table 1: Advance Percentage Leaders, 2012
Team
|
OPP
|
ADV
|
ADV%
|
|
Joey
Votto
|
CIN
|
231
|
127
|
.550
|
Joe
Mauer
|
MIN
|
375
|
203
|
.541
|
Elvis
Andrus
|
TEX
|
355
|
186
|
.524
|
Martin
Prado
|
ATL
|
355
|
184
|
.518
|
John
Jaso
|
SEA
|
216
|
111
|
.514
|
Jon
Jay
|
SLN
|
249
|
127
|
.510
|
David
Murphy
|
TEX
|
291
|
145
|
.498
|
Garrett
Jones
|
PIT
|
312
|
155
|
.497
|
Alberto Callaspo
|
ANA
|
285
|
141
|
.495
|
Jonathan
Lucroy
|
MIL
|
229
|
113
|
.493
|
Table 2: Advance Percentage Trailers, 2012
Player
|
Team
|
OPP
|
ADV
|
ADV%
|
Zack
Cozart
|
CIN
|
242
|
65
|
.269
|
Jemile
Weeks
|
OAK
|
235
|
70
|
.298
|
Rickie
Weeks
|
MIL
|
361
|
114
|
.316
|
Josh
Reddick
|
OAK
|
400
|
127
|
.318
|
Wilin
Rosario
|
COL
|
242
|
80
|
.331
|
Drew
Stubbs
|
CIN
|
232
|
77
|
.332
|
Trevor
Plouffe
|
MIN
|
289
|
96
|
.332
|
Wilson
Betemit
|
BAL
|
200
|
67
|
.335
|
Ty Wigginton
|
PHI
|
229
|
77
|
.336
|
Justin
Smoak
|
SEA
|
308
|
104
|
.338
|
Joe Mauer of the Twins takes over the ADVAA leadership with 52 (Table 3). This means that he advanced 52 more base runners than would have been expected by an average player in the same number of opportunities. On the other hand, Athletics outfielder Josh Reddick was -34 advancements below average (Table 4).
Table 3: Runners Advanced Above Average Leaders, 2012
Player
|
Team
|
OPP
|
ADV
|
ADVAA
|
Joe
Mauer
|
MIN
|
375
|
203
|
52
|
Elvis
Andrus
|
TEX
|
355
|
186
|
43
|
Martin
Prado
|
ATL
|
355
|
184
|
42
|
Joey
Votto
|
CIN
|
231
|
127
|
35
|
Miguel
Cabrera
|
DET
|
417
|
199
|
31
|
Garrett
Jones
|
PIT
|
312
|
155
|
30
|
Matt
Holliday
|
SLN
|
438
|
204
|
29
|
David
Murphy
|
TEX
|
291
|
145
|
28
|
Torii Hunter
|
ANA
|
356
|
171
|
28
|
Prince
Fielder
|
DET
|
416
|
195
|
28
|
Table 4: Runners Advanced Above Average Trailers, 2012
Player
|
Team
|
OPP
|
ADV
|
ADVAA
|
Josh
Reddick
|
OAK
|
400
|
127
|
-34
|
Zack
Cozart
|
CIN
|
242
|
65
|
-32
|
Rickie
Weeks
|
MIL
|
361
|
114
|
-30
|
Delmon
Young
|
DET
|
408
|
138
|
-26
|
Jemile
Weeks
|
OAK
|
235
|
70
|
-24
|
Shelley
Duncan
|
CLE
|
172
|
45
|
-24
|
Nick
Hundley
|
SDN
|
163
|
43
|
-22
|
Ike
Davis
|
NYN
|
372
|
127
|
-22
|
Jeff Francoeur
|
KCA
|
339
|
115
|
-21
|
Vernon
Wells
|
ANA
|
155
|
42
|
-20
|
The information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at Retrosheet.org.
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