Starting pitchers never forget a former division rival - even after moving on to another team. Some have gone on to fare well against their one-time foes, while others have struggled.
Here are three Sunday pitchers who have had varying degrees of success against their ex-nemeses:
Scott Feldman, Baltimore Orioles (10-9, 3.94 ERA)
Feldman broke into the majors with the Texas Rangers - making him all-too-familiar with Sunday's opponent, the Oakland Athletics. The towering right-hander would probably rather face a different club; he's just 4-6 with a 6.37 ERA in 12 starts and nine relief appearances against the A's.
The Orioles and Athletics wrap up a three-game series at Camden Yards Sunday.
Matt Garza, Texas Rangers (9-2, 3.59 ERA)
Garza spent his first two big-league seasons with the Minnesota Twins, and will face a former rival in the Chicago White Sox on Sunday. Garza is 3-3 with a 4.17 ERA in eight career starts against the White Sox, but limited them to two runs on five hits over seven innings in their last encounter July 8.
The Rangers and White Sox conclude a three-game set in Chicago on Sunday.
Jake Peavy, Boston Red Sox (9-5, 4.25 ERA)
Peavy was one of the top pitchers in the National League with the San Diego Padres a few years back - a fact that isn't lost on the Los Angeles Dodgers. The 32-year-old right-hander has crushed the Dodgers over his career, going 13-2 with a 2.27 ERA in 24 starts.
The Red Sox and Dodgers finish their three-game interleague series Sunday night in Los Angeles.