Sentence 1: Ronnie was a college pitcher who was struggling on the mound. 
 Sentence 3: He showed him how to throw a screwball 
 Sentence 4:  Ronnie practiced the screwball for hours on end 
 Sentence 5:  In his next start he struck out 11 of the 15 batters he faced 
 Given Sentence 2: His pitching coach took him aside at practice one day.