The rotation picture became clear early in the day when Jacob Turner, who came into Spring Training as a frontrunner to win a rotation spot, was optioned to Triple-A New Orleans. Slowey, a non-roster invitee, will be making the team and pitching in the fifth spot.
"We sent Turner down to get his command back," Redmond said. "That was a tough one."
Miami gets a serious test right off the bat.
On Monday, the Marlins take on Washington at Nationals Park. Nolasco will get the nod against Stephen Strasburg. Rounding out the series at Washington will be Eovaldi in Game 2 against Gio Gonzalez, and LeBlanc will go in the series finale, opposing Jordan Zimmermann.
LeBlanc is the lone lefty in the rotation, and he will split the starting five.
"That's what we were looking to do, after Eovaldi, a big, power guy, mix in the lefty," Redmond said. "LeBlanc is more of a control, finesse guy. Give them a different look. We figured that was the best way to go. We'll see how it is. After the first time, the numbers don't really matter as far as what number you pitch in the rotation."
Alvarez will pitch on April 5 at the Mets, and Slowey will go on April 6. Nolasco will close out the series in New York.
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter