Nationals placed RHP Ryan Mattheus on the 15-day disabled list, retroactive to May 20, with a fractured right hand. Mattheus suffered the injury Sunday after he gave up five runs on four hits and two walks over one inning against the Padres and punched his locker in frustration. No word yet on how long he'll be sidelined, but he's obviously facing an extended absence. The Nationals are calling up Yunesky Maya and Fernando Abad for some bullpen insurance.

Nationals activated RHP Ryan Mattheus from the 15-day disabled list. Mattheus reportedly "looked great" in his latest rehab appearance, and will return to a middle relief role with the Nationals. He's replacing Brad Lidge on the active roster.

According to MASN.com's Byron Kerr, Ryan Mattheus (foot) ''looked great'' in his latest rehab appearance with Double-A Harrisburg. Mattheus hasn't reported any complications as he recovers from plantar fasciitis in his left foot. If all goes as planned, he should return to the Nationals sometime in late-June.

Ryan Mattheus (foot) will continue his minor league rehab assignment with Double-A Harrisburg. Mattheus allowed a pair of solo homers Sunday in his first rehab appearance with High-A Potomac. The 28-year-old right-hander has been on the disabled list since May 21 with plantar fasciitis in his left foot.

Ryan Mattheus (foot) is scheduled to begin a minor league rehab assignment on Sunday. Mattheus made it through a bullpen session Wednesday without incident and is scheduled to throw a simulated game on Friday. The righty has been on the disabled list since May 21 with plantar fasciitis in his left foot.

Ryan Mattheus (plantar fasciitis) threw a pain-free bullpen session Wednesday. Nationals manager Davey Johnson did note that Mattheus still has some "puffiness" in his left foot, but this should still be viewed as a big step in the right direction. Mattheus will have pitchers' fielding practice on Thursday. It's not clear when he'll begin a rehab assignment.

Ryan Mattheus (plantar fasciitis) is still dealing with tenderness in his left foot. Mattheus is reportedly progressing well, but the Nationals are worried he could re-injure himself by ''moving off mound'' and want to bring him along slowly. He's no longer in a walking boot and recently began throwing from a distance of 120 feet. The 28-year-old right-hander has a 2.25 ERA and 13/7 K/BB ratio in 20 innings of work this season and will return to the Nationals bullpen when healthy.

Ryan Mattheus (plantar fasciitis) is out of a walking boot and throwing from a distance of 120 feet. Mattheus was placed on the disabled list last week after being diagnosed with a partial tear in the plantar fascia in his left foot. He's ahead of schedule right now, but the Nationals' trainers will bring him along slowly to avoid a setback.

The Nationals are expected to place Ryan Mattheus (plantar fasciitis) on the disabled list Tuesday. Mattheus is currently dealing with plantar fasciitis in his left foot and is scheduled to see a specialist Tuesday in Baltimore. While it's not a major injury, it's not clear when he'll he ready to pitch again. Chien-Ming Wang (hamstring) is expected to be activated from the disabled list to replace him on the active roster.

Ryan Mattheus is scheduled to get X-rays on his left foot Monday in Philadelphia. Mattheus has felt something for the past few weeks and may have aggravated it in Monday. The Nats are hoping it's plantar fasciitis, but we should know more after he sees a specialist in Baltimore on Tuesday. Chien-Ming Wang could replace him on the active roster if he requires a stint on the disabled list.