Newly acquired pitcher Joe Blanton and Manager Dusty Baker both operate vineyards in California.
Werth was converted from catcher to outfielder in 2002.
Koda Glover, Shawn Kelley and Blake Treinen remain favorites to close this year, but the Nationals say they haven't decided who will do it.
Washington's crowded bullpen situation leaves it with a decision to make: Is a designated long man worth a spot over hard throwers with late inning potential?
The pitcher who played 17 seasons with nine teams says he has a better relationship with Washington than any other. And Dusty Baker finds his insight useful.
Many of the experienced players left in the competition for bullpen spots threw on Monday, knowing full well decisions about their fates are coming soon.
Shawn Kelley always wanted to work in Washington. He thought it would be on Capitol Hill instead of the Nationals Park mound.
The Nationals reliever on Sunday pitched in his first league game since early March.
The manager worries that his second baseman might not have enough time to get ready for the season because of his limited playing time with Team USA.
The right-hander was visibly relieved after his start on Thursday, and will make his Grapefruit League debut next week, if all goes to plan.