Marlins top prospect Andrew Heaney doesn't worry about the pressure that comes with being the ninth overall pick in the 2012 First-Year Player Draft.

When the 22-year-old left-hander arrives in Jupiter, Fla., in three weeks for the start of big league camp, Heaney will zero in on his own high standards rather than what others think.

"I'm expecting to go and compete for a job," Heaney said. "Whether that's realistic to get a job straight out of spring training I don't know. I'm not in those meetings. I don't make those decisions. I would like to think that if I pitch well I have a chance to make it. That's my goal.

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"I don't think there's any shame in not achieving that goal. I'm not in a hurry to get to the big leagues. I want to have a long career, and I want to be ready when I'm up there. If that's what it takes just to have some more time in Double-A, Triple-A -- wherever I go -- I'll do that. But I'm ready to go out there and compete and win that job."

Miami's first four starting rotation jobs appear locked up with returning right-handers Jose Fernandez, Nathan Eovaldi, Jacob Turner and Henderson Alvarez.

The fifth arm, however, is up for grabs.

Non-roster invitee Kevin Slowey earned that spot last spring before an injury placed him on the 60-day disabled list to close out the season. Tom Koehler took his place and pitched in 29 games (23 starts), going 5-10 with a 4.41 ERA.

Left-handers Brad Hand and Brian Flynn, both with big league experience, are on the 40-man roster. Heaney, who would probably require an innings limit, is not.

Then again, it's hard to predict how things will play out during Grapefruit League action. Turner struggled and started 2013 in Triple-A New Orleans. Eovaldi and Alvarez opened the season on the DL with right shoulder inflammation.

Heaney is no stranger to an injury setback.

On the final pitch of last big league camp, the 6-foot-2, 190-pounder suffered a lat strain that forced him to miss almost two months of the Florida State League season.

Upon his return, Heaney went 5-2 with a 0.88 ERA in 13 games (12 starts) for Class A Jupiter before moving up to Double-A Jacksonville. There he posted a 4-1 record and 2.94 ERA in six starts.

Heaney's arsenal consists of three pitches: a fastball that sits between 90-93 mph and can touch 95, a slider from 82-84 mph, and a changeup. He can command all of them, particularly his fastball, which gets him a lot of swings and misses on his sliders.