MIAMI -- To receive, the Marlins certainly had to give. They did so in a big way this offseason, parlaying several top prospects -- including lefty Andrew Heaney and right-hander Anthony DeSclafani -- to help bolster their big league roster.
Even though a number of important pieces were traded, the organization still has a healthy supply of upper-level talent that could contribute at some point in 2015. MLB.com breaks down the key prospects to watch when Spring Training starts on Feb. 20.
LHP Justin Nicolino: Only Tyler Kolek, the second overall Draft pick in 2014, ranks higher on the Marlins' Top 20 Prospects list. Kolek, 19, will not be in big league camp, but Nicolino will. The lefty was 14-4 with a 2.85 ERA for Double-A Jacksonville's Southern League title team. Look for Nicolino to open at Triple-A New Orleans, and he may be Major League ready around mid-season.
C J.T. Realmuto: Ranked 70th on MLB.com's Top 100 Prospects, Realmuto is regarded as the team's catcher of the future. The Oklahoma native got a taste of the big leagues in 2014, but he made his mark at Jacksonville, batting .299 with a .461 slugging percentage. He projects to start the season at New Orleans.
LHP Adam Conley: A left elbow injury hindered Conley's 2014 season. Now healthy, the lefty could be interesting to follow. He's a hard thrower, and he may become an option to start or pitch out of the bullpen. Conley is Miami's sixth-rated prospect.
RHP Jose Urena: Nicolino and Urena provided a strong one-two punch on Jacksonville's championship club. The right-hander, Miami's seventh-ranked prospect, was 13-8 with a 3.33 ERA in Double-A. He struck out 121 and walked 29 with a WHIP of 1.14 in 162 innings.
1B Justin Bour: The arrival of Michael Morse at first base means Bour projects to begin the year at New Orleans. If the 26-year-old performs like he did a year ago, he will provide quality depth at the position. Bour belted 18 home runs and drove in 72 for the Zephyrs in 2014, and he appeared in 38 games for the Marlins with a slash line of .284/.361/.365. Bour may emerge as a left-handed bat off the bench in Miami.
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter @JoeFrisaro. This story was not subject to the approval of Major League Baseball or its clubs.