The Washington Nationals traded pitcher Tomo Ohka to the Milwaukee Brewers for former All-Star second baseman Junior Spivey, then claimed right-hander Ryan Drese off waivers from the Texas Rangers to fill Ohka's spot on the pitching staff. "We're trying to win here," general manager Jim Bowden said. "Every game's important. This makes us a better team. It allows people to be in the positions they're supposed to be in."