Casey was in his first season with Pittsburgh after being acquired from the Cincinnati Reds in a deal last offseason. He was batting .296 in just 59 games with three homers and 29 runs batted in.
The 32-year-old veteran missed half of April and nearly all of May with two fractures of the transverse process in his lower back. He will give the Tigers a good glove at first base and a solid left-handed bat in a lineup dominated by right-handed hitters.
A free agent at the end of the season, the Pirates did not enter discussions with Casey on a contract extension. That's somewhat disappointing, as Casey said he would've liked to retire as a Pirate.
Casey saw the handwriting on the wall as far as a possible trade and indicated as much last week.
"If it happens, then I have no regrets."
"The whole thing played with my emotions more than anything," said Casey. "When I was traded, I didn't plan on being here more than this season. Then it looked like something might be worked out, and I began to think about what it would be like to retire here. I broke my back, which obviously wasn't part of any plan. And now, I'm feeling pretty good, but it looks like I'm going somewhere else to play out the season."
Casey was a second-round draft pick by Cleveland in 1995 and made his big league debut with the Indians in 1997. He was then traded to Cincinnati just prior to the 1998 season in exchange for Dave Burba and was a three-time All- Star in eight seasons with the Reds.
In 1,140 games, Casey is a career .304 hitter with 121 homers and 634 runs batted in.
Rogers was 3-2 with one save and a 2.39 earned run average in 37 relief appearances this season at Double-A Erie of the Eastern League. The 24-year- old right-hander, who will be assigned to Double-A Altoona, is in his fourth professional season after being selected in the 11th round of the 2003 draft.
The Tigers also optioned first baseman Chris Shelton to Triple-A Toledo. In 102 games, Shelton was batting .277 with 16 homers and 45 runs batted in this season.