(Brian Garfinkel/GETTY IMAGES)

Rodriguez, 25, has been on the disabled list since June 7 with a strained right index finger, the same one he slammed into a bathroom door two weeks ago. The time away is also a welcome reprieve for the flame-throwing reliever, who suffered a recent tough stretch that saw him lose the closer’s role because of wildness. He has a 5.14 ERA in 21 innings.

Marrero, 23, a former first-round pick in the 2006 draft, injured himself during winter ball as he attempted to stretch for the ball at first base. The Nationals had counted on him to be a right-handed off the bench this season before he got hurt.

So far in his rehab, Marrero is hitting a combined 13 for 39 (.333) with two home runs and seven RBI in 11 games between Class A Hagerstown, Class A Potomac and Class AA Harrisburg. He recently went 6 for 22 for Class AA Harrisburg and is expected to begin his stint with Syracuse on Tuesday.

Reliever Cole Kimball began his rehab assignment on Tuesday as well, pitching a scoreless inning for the Nationals’ affiliate in the Gulf Coast League — the first time he has pitched in a game since he was injured on June 9 last season. Kimball, a 26-year old right-handed pitcher, made his debut last season but is recovering from surgery last July to repair a torn rotator cuff in his right shoulder.

As he rehabbed during spring training, his timetable had him returning possibly around or after the all-star break.

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James Wagner joined the Post in August 2010, wrote about high school sports across the region for two years and has covered the Nationals since the middle of the 2012 season.