The Washington Nationals have signed Cesar Hernandez to a one-year contract worth $4MM with $1MM in incentives. Hernandez has been a solid contributor for the Nationals over the last month, hitting.270 with 21 HR and three RBI. He will start at second base and hit leadoff Sunday against the Brewers. Hernandez hit 21 home runs last year, but was traded to the White Sox midseason.