Most left-handed hitters in the majors aren’t truly left-handed. They are naturally right-handed and learned to bat left-handed. From 2002 to 2013 only 43% of all left-handed plate appearances were from left handed throwers.
I thought the there may be a somewhat different batted ball profiles for the two groups such as right-handed throwers are more fly-ball prone. After totaling the values from 2002 to 2013, the results are almost identical:
| Throwing Hand | PA | AVG | OBP | SLG | OPS | NIBB% | K% | GB% | LD% | FB% | OFFB% | IFFB% |
| Left | 874648 | 0.271 | 0.343 | 0.429 | 0.772 | 8.6% | 18.0% | 43.2% | 20.0% | 34.7% | 31.5% | 3.2% |
| Right | 1149769 | 0.266 | 0.340 | 0.421 | 0.761 | 8.8% | 18.5% | 42.9% | 20.1% | 35.5% | 32.1% | 3.4% |
And here is the percentage mix for hits:
| Throwing Hand | 1B | 2B | 3B | HR |
| Left | 66.4% | 19.8% | 2.8% | 10.9% |
| Right | 66.3% | 20.0% | 2.5% | 11.1% |
The only possible differences would be in FB% and K% being higher for right-handed throwers.





