Types of relay race.

Types of relay race.
The relay races are:
- 4x100m;
- 4x400m Relay;
- Olympic 100m relay;
- Olympic 200m relay;
- Olympic 400m relay and
- Olympic 800m relay.
4x100m and 4x400m MF MF.
Consists of running distance by steps, each step being covered by a corridor, which are replaced on track
by passing a baton from one to another, this passage made within a "zone of passage."

This proof develops team spirit and unity; appeared in Pennsylvania in 1895.
How to hold the bat.
In starting low, and the left hand so it does not fall off or unbalance the athlete;
A - pressed by the fingers on the palm;
B - the fingers average and minimum;
C - between the thumb and middle fingers;
D - between the middle and ring fingers and
And - by the thumb and forefinger.

There are others, but these are most commonly used.

Source: Athletics