From Comcast SportsNet
The Nationals have called up veteran reliever Mike Gonzalez from Class AAA and have sent struggling Ryan Perry to Syracuse.
MIAMI -- Over the last seven seasons, the Nationals have had 18 chances to beat Anibal Sanchez. And they're 0-for-18 against the Marlins right-hander.
Nationals catcher Jesus Flores is listed as day-to-day after straining his right hamstring in the team's win over Atlanta on Sunday night.