5. Sam Dyson and Trevor Williams
Former South Carolina Gamecock Sam Dyson was acquired by the Marlins in the Toronto trade. A 25-year-old right-handed pitcher, Dyson has probably lost a little velocity since his college days, but he still can probably hit 95 pitching in relief. If the Marlins decide to convert Dyson into a reliever, which they likely will, he should be able to sit at around 94 instead of the 92 that he was at as a starter. Trevor Williams was drafted by the Marlins 44th overall in the 2013 amateur draft out of Arizona State. A 6'3'' projectable starting pitcher, Williams has a fastball that sits at 93 but that he can turn up to 95 on a fairly consistent basis. Williams should be a quick riser through the Marlins farm system but hopefully he will get more than enough time to pinpoint his fastball and increase his velocity.
4. Austin Brice
Austin Brice, 20, is probably the most inconsistent and unpredictable pitcher on this list despite having a few years of Minor League experience tucked under his belt. With a traditional power pitcher frame and a fastball that can touch 96, Brice has the ceiling of a third starter if he can ever get his command and control on the same page. Brice's delivery has a ton of problems and hasn't gotten that much better over his last two years in the minors so who knows if 2014 will be the year that he starts to figure some things out on the mound?
3. Jose Urena
Aside from just being known as my favorite prospect in the Marlins farm system, Jose Urena has also developed a reputation for his fastball. Urena easily throws in the mid 90's and he's been known to have hit 98 MPH in games in multiple outings. Even though he doesn't look like a traditional power pitcher at first glance, Urena has a projectable frame that makes it clear he will be able to retain this velocity. If the Marlins moved Urena to the bullpen, he would likely be a dominant reliever sitting at 96-98 with a pretty nasty slider. However, I hope Urena is allowed to continue starting, so as long as his slider comes along, he will have a devastating three-pitch repertoire. No matter how they want to use him, Jose Urena definitely has a bright future with the Marlins and a lot of that is because of his high velocity fastball.
2. Adam Conley
Adam Conley, 23, is the lone lefty on this list. A second-round pick in 2011 out of Washington State, Conley's fastball has led him to a ton of success in his first three years in the minors. With a fastball that moves and still sits at around 93-94, some teams would have moved Conley to the bullpen where he could likely throw in the upper 90's. Nonetheless, Conley's fastball is still a dangerous pitch as a starter and it should lead him to seeing some Major League action in 2014.
1. Colby Suggs
Colby Suggs, 22, was the Marlins second-round pick in the 2013 amateur draft out of Arkansas. A hefty closer, Suggs has a maximum effort delivery which prevents him from pitching more than an inning or two per outing. Suggs sits at around 94-96 MPH, but he has been reported to have touched 98 MPH on multiple occasions. Colby Suggs has a very bright future and the Marlins obviously thought highly of his fastball or they wouldn't have drafted a reliever in the second round. Suggs's fastball has a ton of potential, but whether or not he is able to develop his curveball and pinpoint his command will determine just how successful he'll be as a closer down the line.