Best practices when it comes to screening a Realtor

[Daniel Moscoso]

I am wanting to know what are some of the best ways to screen a Realtor for best fit and effectiveness. The home in question is a flip deal, needs quick turnaround. 

What questions to ask? How to verify that their stats are real or not. What questions to ask to verify if they really know and understand the market and submarket(specific neighborhood(s)). This is all in context of a home that just finished rehabbing and now needs to sell ASAP.