Garton was optioned to minor-league camp Wednesday, Marc Topkin of the Tampa Bay Times reports.
The right-hander turned in a 7:2 K:BB in 8.1 Grapefruit League innings, but also gave up 10 hits, including two home runs. Garton figures to ride the shuttle throughout most of the season, assuming he pitches well enough at Triple-A to maintain his 40-man spot. He was promoted to the majors on four occasions last year.