Wilson Ramos’ 44-game stay on the disabled list looks to be nearing its end. The Washington Nationals’ catcher will serve as the designated hitter Wednesday evening for Single-A Potomac, and manager Davey Johnson is hopeful he will be ready to be activated on Thursday. The Nationals play an 11 a.m. game against the Milwaukee Brewers on Thursday, July 4. Johnson said Wednesday that as long as everything goes well for Ramos Wednesday night, he expects to put him in the lineup and start him at catcher on Thursday. Ramos has been out since May 15 with the injury, as he re-strained his left hamstring just a month after he injured it the first time this season. The catcher, who missed almost all of the 2012 season after tearing the anterior cruciate ligament and meniscus in his right knee, has missed 58 total games this season because of the hamstring issues. When he returns, the Nationals will be as close as they’ve been to having their Opening Day lineup back together since April 14. Second baseman Danny Espinosa, who opened the season in the No.7 spot in the lineup, is playing for Triple-A Syracuse so swapping him out for Anthony Rendon will be the only difference upon Ramos’ return.