It really depends on the sport. If you take football or something similar, it makes virtually no difference.
But if you take Fencing for example, it would be a much larger disadvantage to fence with your 'off' hand than with your 'main' hand.
One disadvantage with leftie golfers is that they all need special Golf clubs which are often more expensive.
However in say Baseball, being a left handed pitcher or batter, can give you a large advantage over someone who is right-handed.
Left-handed actualy. i kind of think he is righty but i am not sure he might be lefty
The biographies give no clue, but there are signs he might have been left-handed.
She is Right-Handed
LEFT-HANDED! not right-handed!
He is right-handed
Yes, a right handed guitar is for right handed people.
Thomas Edison was right-handed.
yes, she is right handed
Right handed
she is right handed as seen in the pic below http://guestofaguest.com/wp-content/uploads/2008/04katy-perry142-copy.jpg
He is right handed.
What is Bethany Hamilton right handed or left-handed