Statistics: 1-0 W-L, 0 SV, 1.82 ERA, 1.07 WHIP, 12.7 K/9, 1.1 WAR
If you think Trevor Rosenthal doesn't deserve to be the reliever on this U-25 team team simply because he isn't the closer on his own team, well, you haven't seen him throw a baseball.
Which he does at 100 miles per hour quite often.
Rosenthal, 23, also possesses a plus curveball and still-being-refined changeup with which he uses to make big leaguers look like little leaguers.
While he struggled a bit out of the gate, and thus lost out on a shot to close for the Cardinals, Rosenthal recently went through a 20-game stretch in which he didn't surrender a single run over 21.1 innings while striking out 30 and walking three.
Sometimes a pitcher doesn't need to compile saves to prove he's a closer.
Honorable Mentions: Addison Reed, White Sox (24 years old); Drew Smyly, Tigers (24 years old); Robbie Ross, Rangers (24 years old); Cody Allen, Indians (24 years old)