Per Talk Nats:
As we reported on July 1, Dave Martinez's option to manage next year was not picked up per sources who have told us that set a "chain reaction" after Mike Rizzo refused to fire Martinez that ownership got rid of both. Over a month ago, source told us that ownership left Davey's fate up to Rizzo but after being swept in the Red Sox series and the lack of "energy", and scathing articles by Ken Rosenthal and Barry Svrluga, ownership stepped in.