Left-handed pitcher Jonathan Sanchez was traded to the Colorado Rockies for pitcher Jeremy Guthrie. The Rockies save more than $1 million in the exchange of struggling veteran starters. Guthrie had been in the bullpen before recently returning to the Rockies' rotation. He was 3-9 with a 6.35 ERA with Colorado and began the season with losses in nine straight decisions. Sanchez was acquired in the offseason deal that sent All-Star MVP Melky Cabrera to the Giants. He was designated for assignment by the Royals Tuesday after his ERA hit 7.76 in 12 starts. Sanchez is 1-6 and allowed seven runs in 1 1/3 innings against the Mariners Monday. Guthrie was traded to the Rockies from Baltimore in the offseason.