The Nationals brought back LHP Matt Krook on a one-year deal after placing PJ Poulin on the 15-day IL with a left flexor strain.

The Washington Nationals re-signed Matt Krook after they revealed PJ Poulin suffered an injury.

Nationals lefty becomes free agent

The left-hander lasted just three games with the Nationals.

The Washington Nationals blew another save against the New York Yankees on Friday, and those late-game problems are starting to become an organizational issue more than anything else.

The Washington Nationals made a trio of roster moves following Saturday's loss against the Pittsburgh Pirates

The A's made a series of roster moves on Sunday, designating Scott Barlow for assignment and optioning Alika Williams. They also called up Joey Meneses and left-hander Matt Krook, while placing Luis Severino on the 60-day IL