Adam Kilgore of The Washington Post reported on Saturday that backup catcher Sandy Leon was optioned to Triple-A to make room for Suzuki.
Suzuki will likely replace Jesus Flores as the everyday catcher for the Nationals. Flores was hitting only .221 with three home runs and 18 RBI in 67 games this season. Suzuki provides the potential to produce better numbers than Flores.
Although Suzuki has had a disappointing year thus far, he has a productive track record with great seasons in 2009 and 2010. Getting away from Oakland's pitcher-friendly park should help Suzuki as well.