Umpiring

1. Age/Level of Professionalism

1.1. 8-10 year old kids

1.2. Major League Level

2. Fan Culture

2.1. Irascible

2.2. Placated/acquisiecent

2.3. Riotous

3. Fan Investment

3.1. Loud/ refined chants

3.2. Encouragement

3.3. Adversarial chants

3.4. Complete stoicness

4. Home field advantage

4.1. Practice avoidance

4.2. Receptive to home crowd