Dusty Baker rules Nats P Stephen Strasburg out for NLDS

The Washington Nationals will have to begin their playoff quest without Stephen Strasburg, as manager Dusty Baker said the right-hander will miss the team's NLDS series against the Los Angeles Dodgers and perhaps the team's entire postseason run.

"Well, you won't see [Strasburg] in the first series, and I don't even know if you'll see him, you know, maybe in the second series," Baker said on McNabb & Custer on ESPN Radio. "You might see him in the World Series."

Nats general manager Mike Rizzo said last week that Strasburg was "unlikely" to be back on the mound for the beginning of the playoffs.

Strasburg has been on the disabled list since Sept. 7 because of a strained flexor mass in his right arm, and though he has played catch, he does not appear close to taking the mound.

This is not the first time he has missed playoff action. In 2012, when the Nationals won their first division title, they played the postseason without Strasburg, whom the team shut down in early September due to concerns about his health in the wake of his 2010 Tommy John surgery.

The top overall pick in 2009, Strasburg participated in Washington's second postseason appearance in 2014. He took the loss in Game 1 of the NLDS against the San Francisco Giants.

This season, Strasburg was 15-4 with a 3.60 ERA. He was named an All-Star for the second time, following a first half in which he went 12-0 with a 2.62 ERA.

Information from ESPN's Eddie Matz contributed to this report.