Enny Romero is on the disabled list. (AP Photo/Ross D. Franklin)

CHICAGO — As expected, the Nationals placed left-hander Enny Romero on the 10-day disabled list Friday with a left forearm strain. Fellow left-hander Sammy Solis, who was optioned to Class AAA Syracuse on Wednesday, was recalled in Romero’s place.

Romero is with the team in Chicago. Manager Dusty Baker said he won’t have any information on the severity of Romero’s injury until he visits a doctor, which he is scheduled to do. On Wednesday, Romero said he’s never dealt with an arm injury, only back problems, including a minor one a couple of weeks ago.

Romero suffered his injury pitching in the sixth inning of Wednesday’s loss to the Marlins. He said he first felt tightness in the forearm on the second pitch he threw to Giancarlo Stanton. He threw four more pitches and struck out Stanton before a trainer went out to check on him. He then threw one pitch to test out the forearm again and immediately walked off the mound.

Romero, who allowed two runs in 2/3 of an inning Wednesday, has been one of the Nationals’ very few consistently effective relievers this season. The 26-year-old Dominican has a 2.67 ERA over his last 25 innings. Solis met the team at Wrigley Field on Friday morning. He has posted a 14.00 ERA in nine innings for the Nationals this season.

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A Skittles-branded tarp will cover the field at Nats Park during rain delays