As talks continue, the Marlins also are giving starters currently in the rotation a chance to secure spots. Brad Hand, who started on Friday, and Jacob Turner, specifically, are getting second chances after struggling in the rotation early in the year.
Both have shown promise. If they continue to impress, it could change the organization's thinking in terms of making a possible deal by Thursday's non-waiver Trade Deadline.
"It's time for them to take the next step," general manager Dan Jennings said. "At this point, they're showing signs of doing that. We need them. They need to take the step. They've done it thus far out of the gate. That's huge."
Turner will start on Sunday in the series finale in Houston.
Turner and Hand each have thrown out of the bullpen, too. Now, they're getting their chances to start every fifth day.
An internal option to join the rotation is Brad Penny, who is currently at Triple-A New Orleans, where he's shown promise as he attempts his comeback. Penny last pitched in the big leagues in 2012.
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter