Nationals Manager Davey Johnson eyed his players as they arrived at spring training, sized up their bodies and health, all factors he takes into consideration as he formulates a lineup. The Nationals will have one of the best lineups in baseball this season, a combination of left- and right-handed hitters, both power hitters and for average. Johnson just isn’t sure yet what variation of it he wants to use. It’s no secret that Denard Span will be the leadoff hitter, Adam LaRoche was re-signed to be a middle-of-the-order power bat and Ian Desmond thrived last season when dropped from the leadoff spot to the fifth and sixth spots. But the two players that Johnson still isn’t sure about are Bryce Harper and Jayson Werth. “Spring is going to kind of be a test where I think they fit the best,” Johnson said. “It’s all about making harder choices for the opposing manager on his matchups.”