Lerner also announced that assistant general manager Mike DeBartolo has been named as Rizzo's replacement on an interim basis. DeBartolo will immediately be tasked with running the draft room for next week's MLB Draft, in which the Nationals have the top pick.

Washington Nationals owner Mark Lerner cited a failure to reach expectations and a "pivotal time" for the franchise when he announced the firings of longtime manager Dave Martinez and general manager Mike Rizzo.

Headed into an off day and stuck in last place in the NL East, the Washington Nationals fired manager Dave Martinez and general manager Mike Rizzo on Sunday night, hours after a 6-4 loss at home completed a sweep by the Boston Red Sox.