The St. Mary's, Pa. native suffered a left hip flexor strain. Beimel, 32, sustained the injury during Monday night's game while making a diving play on Kelly Johnson's one-out bunt attempt for a hit.
D.C., like much of the northeast, dealt with rain most of the day. The AP reporter opened his game recap, "Between the rain and the chill, the weather was awful." The start of the game was delayed 2 hours, 10 minutes.
Beimel's play made it two outs in the eighth inning. Then the rain intensified and play was suspended for 33 minutes
When it resumed Garrett Mock was on the the mound and quickly got out no. three.
When the game ended at 12:12 a.m., today, Washington had a 3-2 win over Atlanta.
In eight relief appearances this season, the lefty has a 1.23 ERA. He's allowed just one run, it was earned, in 7 1/3 innings.
The Washington Post, in its Nationals journal item on the injury, described Beimel as an "eighth inning specialist ... their most reliable reliever"
Seven players, five from the 25-man active roster, from Washington's 40-man roster are on a disabled list.
Washington recalled right-hander Saul Rivera from Triple-A Syracuse.
It's a bit more serious for Doumit, whose recovery time is expected to be eight to 10 weeks.