WASHINGTON — Right-hander Tyler Walker agreed to a one-year contract with the Washington Nationals that pays him $650,000 if he’s in the majors and $120,000 if he’s in the minors, the latest in a series of moves to reshape the team’s bullpen.

To make room on the 40-man roster for Walker, the Nationals designated right-hander Marco Estrada for assignment on Thursday.
The 33-year-old Walker went 2-1 with a 3.06 ERA in 32 appearances with the NL champion Philadelphia Phillies last season. He has played for four teams across seven seasons in the majors.
Walker joins a new-look Washington bullpen. Earlier in the offseason, the Nationals signed closer Matt Capps, traded for New York Yankees reliever Brian Bruney, and agreed to a minor league contract with Eddie Guardado.
Estrada went 0-1 with a 6.14 ERA in four games with Washington last season, including one start.