The Washington Nationals, fresh with the possibility that the Seattle Mariners will become a serious contender to acquire left fielder Alfonso Soriano, have started scouting the Mariners' system for prospects. Scouting director Dana Brown and another scout watched the Mariners' game on Monday in New York against the Yankees. In addition, director of player personnel Bob Boone has recently seen the Mariners' top farm club, Class AAA Tacoma, as the Nationals try to learn as much as possible about Seattle's talent pool. The Detroit Tigers, Los Angeles Angels, Los Angeles Dodgers and New York Yankees are among the other possible suitors for Soriano.