The Washington Nationals on Thursday signed veteran righthanders Ramon Ortiz and Tony Armas Jr. to one-year contracts. Financial terms were not disclosed. The 32-year-old Ortiz is looking to return to the form that helped him post 44 wins for the Anaheim Angels from 2001-03, including a 15-9 record during their world champion campaign in 2002. During that season, the slender 6-footer went 6-0 in his last nine regular-season starts and was 2-0 in three postseason starts. Ortiz struggled in 2004, going 5-7 with a 4.43 ERA in 34 games, including 14 starts. He was traded to the Reds for righthander Dustin Moseley after the season and was 9-11 with a 5.36 ERA in 2005. He surrendered 206 hits and 34 homers in 171 1/3 innings for Cincinnati.