http://www.baseballamerica.com/today/prospects/ask-ba/2011/2611600.html Flying under the radar and outside BA's Cardinals Top 30 list in the 2011 Prospect Handbook is Quad Cities righthander Trevor Rosenthal. He was very impressive in the spring and has been dominant so far in low A in two starts. What type of ceiling does Rosenthal have and how good is his stuff? Tim Resner Topeka, Kan. A 21st-round pick out of Cowley County (Kan.) CC in 2009, Rosenthal spent his first two seasons in Rookie ball. He showed a 92-94 mph fastball while flashing a solid slider last summer. This year, his stuff has found an extra gear, to the point where Quad Cities manager Johnny Rodriguez says Rosenthal is better than top Cardinals prospect Shelby Miller was at the start of the Midwest League season last year. Miller relied almost exclusively on his fastball at that point and didn't become a well-rounded pitcher until the second half. While striking out 18 over 11 innings in his first two starts, Rosenthal has sat at 93-95 mph and touched 97 with his fastball. His heater has heavy life and he has commanded it to both sides of the plate. He has shown improved tilt and late bite on his slider, which resides in the low 80s. The Cardinals are having him emphasize his changeup, and while it's still a work in progress, it has good action. Rodriguez also gives Rosenthal high marks for his control and mound presence. If Rosenthal can maintain his current fastball, slider and command while improving his changeup, he could become a No. 2 starter. I wouldn't put him in the class of Miller or Carlos Martinez yet, but Rosenthal definitely is rocketing up the ranks of St. Louis pitching prospects. 紅雀版Trey McNutt? --

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