Lefty/Righty effect, 2007. Copyright 2008, Dwight R. Gill
The ability of XERA to translate "standard" data into run production per game (9 innings), shows the real effect
of platooning.
est. Slg.
AB H 2B 3B HR BB SO IP Avg. OBP Avg. OPS H/9 2B/9 3B/9 HR/9 BB/9 SO/9 XERA
40% 43% RHB vs RHP 65942 17193 3467 266 1874 5118 13074 17232 .261 .317 .407 .724 8.98 1.81 0.14 0.98 2.67 6.83 3.97
20% 16% RHB vs LHP 33488 9425 1988 160 1082 3482 5940 8506 .281 .352 .447 .799 9.97 2.10 0.17 1.14 3.68 6.28 4.84
33% 30% LHB vs RHP 56111 15288 3152 443 1698 6286 10329 14431 .272 .349 .435 .784 9.53 1.97 0.28 1.06 3.92 6.44 4.66
7% 11% LHB vs LHP 12241 3071 590 69 303 1193 2846 3242 .251 .320 .385 .705 8.53 1.64 0.19 0.84 3.31 7.90 3.63
100% 2007 Totals 167782 44977 9197 938 4957 16079 32189 43411 .268 .335 .423 .758 9.32 1.91 0.19 1.03 3.33 6.67 4.47
59% RHB 99430 26618 5455 426 2956 8600 19014 25738 .268 .329 .420 .749 9.31 1.91 0.15 1.03 3.01 6.65 4.39
41% LHB 68352 18359 3742 512 2001 7479 13175 17673 .269 .344 .426 .770 9.35 1.91 0.26 1.02 3.81 6.71 4.60
73% RHP 122053 32481 6619 709 3572 11404 23403 31663 .266 .332 .420 .752 9.23 1.88 0.20 1.02 3.24 6.65 4.41
27% LHP 45729 12496 2578 229 1385 4675 8786 11748 .273 .344 .431 .774 9.57 1.97 0.18 1.06 3.58 6.73 4.62
RHB = Right-handed batters. Generally, switch hitters are LHB vs RHP, and RHB vs LHP.
LHB = Left-handed batters.
RHP = Right-handed pitchers.
LHP = Left-handed pitchers.
Lefty/Righty effect, 2006.
est. Slg.
AB H 2B 3B HR BB SO IP Avg. OBP Avg. OPS H/9 2B/9 3B/9 HR/9 BB/9 SO/9 XERA
43% 46% RHB vs RHP 70938 18764 3809 332 2213 5528 13763 18462 .265 .321 .421 .743 9.13 1.85 0.16 1.08 2.69 6.70 4.17
18% 14% RHB vs LHP 29552 8119 1704 127 985 3075 5281 7581 .275 .348 .441 .789 9.62 2.02 0.15 1.17 3.64 6.26 4.72
33% 30% LHB vs RHP 56602 15679 3133 438 1901 6307 10201 14474 .277 .354 .449 .803 9.73 1.94 0.27 1.18 3.91 6.33 4.84
6% 10% LHB vs LHP 10249 2511 489 55 287 937 2410 2740 .245 .313 .387 .700 8.23 1.60 0.18 0.94 3.07 7.90 3.61
100% 2006 Totals 167341 45073 9135 952 5386 15847 31655 43258 .269 .337 .432 .769 9.38 1.90 0.20 1.12 3.30 6.57 4.53
60% RHB 100490 26883 5513 459 3198 8603 19044 26044 .268 .329 .427 .756 9.27 1.90 0.16 1.10 2.97 6.57 4.33
40% LHB 66851 18190 3622 493 2188 7244 12611 17214 .272 .348 .439 .787 9.49 1.89 0.26 1.14 3.78 6.58 4.64
76% RHP 127540 34443 6942 770 4114 11835 23964 32937 .270 .336 .433 .770 9.40 1.89 0.21 1.12 3.23 6.54 4.46
24% LHP 39801 10630 2193 182 1272 4012 7691 10322 .267 .339 .427 .766 9.25 1.91 0.16 1.11 3.49 6.69 4.42
RHB = Right-handed batters. Generally, switch hitters are LHB vs RHP, and RHB vs LHP.
LHB = Left-handed batters.
RHP = Right-handed pitchers.
LHP = Left-handed pitchers.