Slowey, 28, was limited to eight starts with the Columbus Clippers, the Indians' Triple-A club, last year.
Before last season, Slowey pitched with the Twins, where he was teammates with Marlins manager Mike Redmond.
Slowey has developed a reputation for having stellar control during his career. The right-hander has walked just 3.7 percent of hitters in 532 2/3 career innings. Home runs have been a major problem for Slowey, but going to Miami's spacious park should help, provided he can make the team.
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