The Nationals have placed starting 1B Nick Johnson on the 15-day disabled list with a torn tendon sheath in his right wrist which will cause him to miss the next 4-6 weeks. Johnson has played in 38 games this season for the Nationals and he is 24 for 109 (.220 avg, .846 OPS) with 15 runs scored, 5 homers and 20 RBIs. Johnson has played great defense this season for the Nationals and he has also done a good job of getting on base having walked 33 times this season. Dmitri Young has been activated off the D.L. to replace Johnson as the starting 1B. Young has played in 6 games for the Nationals this season and he is 3 for 14 (.214 avg, .619 OPS) with 2 runs scored and 2 RBIs. Aaron Boone will also get some P.T. at first base for the Nationals. Boone has played in 35 games for the Nationals so far this season and he is 21 for 64 (.328 avg, .958 OPS) with 8 runs scored, 3 homers and 9 RBIs. No matter who is playing first base for the Nationals the team defense will suffer until Johnson returns.