Alphabet soup

From Wiki Gonzalez

Q. I don't understand sabermetric statistics. What is this alphabet soup?

A. Here are some frequently used statistics and explanations on how to calculate them:

• What are DIPS?
• What is VORP?
• What are Win Shares?
• What is ZiPS?
• What is SNVA?
• What is OPS? OPS+?
• What is ERA+?
• What is ARP?
• What is ZR? UZR?
• What is PMR?
• What is SLWTS?
• What is MLV?
• What is EQA?
• What is MLE?
• What is RC?
• What is OWP?
• What is Log5 method?
• What is GPA?
• What is RSI?