Lopez, who underwent right elbow ligament replacement surgery in 2007, has posted a career record of 75-82 with a 4.85 ERA. He registered 33 starts and threw 200 innings for just the second time in his career last season, allowing a league-high 37 home runs and 111 earned runs. Lopez, 35, has pitched exclusively in the National League since 2007.
The right-hander was originally signed by the Padres in 1995, but made just six big league appearances for San Diego. Lopez caught on with the Orioles after a stint in the Mexican League and posted a 60-58 record with a 4.72 ERA in five seasons with Baltimore. Lopez has also pitched for the Rockies, Phillies and D-backs over the past few seasons.
Lopez, who pitched for the Mexican team in the World Baseball Classic in 2006 and '09, has led both leagues in losses. Lopez racked up an American League-high 18 losses with Baltimore in '06 and an NL-high 16 with Arizona last season.
Spencer Fordin is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.