WASHINGTON — The New York Mets placed outfielder Yoenis Cespedes on the 10-day disabled list because of a strained left hamstring.

His absence is another blow to a team that has lost six straight and nine of 10, falling into last place in the NL East. Cespedes is hitting .270 with six homers and 10 RBI.

“They didn’t really see a lot,” Manager Terry Collins said of Cespedes’ MRI. “It’s probably better news than we thought. It’s still going to be awhile, obviously, but it’s in a different part of (the hamstring) where the injury was last week.”

Cespedes doubled in the fourth inning Thursday against Atlanta and limped into second. He needed help to reach the dugout.

On April 20, he left a game against Philadelphia because of a hamstring problem. He returned to the lineup Wednesday.

“I haven’t talked to him except after the game yesterday, and he’s like everybody,” Collins said. “We’re all frustrated right now.”

Collins also said pitcher Noah Syndergaard tossed Friday afternoon and could pitch Sunday if the right-hander reported no discomfort. Syndergaard was scratched from his start Thursday because of biceps and shoulder discomfort.

MARINERS: Felix Hernandez is expected to miss three to four weeks because of bursitis in his right shoulder.

Hernandez was placed on the 10-day disabled list Wednesday after he pitched only two innings in his start at Detroit the previous night. Hernandez is 2-2 with a 4.73 ERA in five starts this season.

Outfielder Mitch Haniger, also injured Tuesday, has a Grade 2 sprain of his right oblique and is expected to be out three to four weeks. He’s batting .338 with four homers and 16 RBI.

RANGERS: Sam Dyson was reinstated from the 10-day disabled list before Friday night’s series opener against the Los Angeles Angels.

The Rangers optioned right-hander Anthony Bass to Triple-A Round Rock. Catcher Brett Nicholas was reinstated from the DL and optioned to Round Rock.