Mobility

Dodge (PH) , DEX 13,

You get a +4 dodge bonus to Armor Class against attacks of opportunity caused when you move out of or within a threatened area. A condition that makes you lose your Dexterity bonus to Armor Class (if any) also makes you lose dodge bonuses. Dodge bonuses (such as this one and a dwarf’s racial bonus on dodge attempts against giants) stack with each other, unlike most types of bonuses.

A fighter may select Mobility as one of his fighter bonus feats (see page 38).

You are skilled at dodging past opponents and avoiding blows.