Nearly all of the Detroit Tigers top prospects were conveniently assembled in the same conference room Wednesday afternoon when the latest installment of MLB Pipeline's ratings was released. The verdict wasn't unexpected: The once-barren Tigers farm system is suddenly very good, aid by trades, draft picks and the simple fact that the new organizational philosophy is to stockpile young players rather than deal them. A pack of strong-armed right-handers lead the way: Franklin Perez, Matt Manning, Alex Faedo and Beau Burrows. Perez was acquired last August in the Justin Verlander trade. Manning, Faedo and Burrows are all recent first-round draft picks. Faedo, who despite being drafted only last summer is the oldest of the bunch, is in Major League camp with the Tigers. The others are on the minor-league side this spring, but it's the side where many of the more intriguing storylines for the rebuilding Tigers can be found. Although the path from prospect to Major League contributor is fraught with challenges, fans can at least imagine the makings of a future rotation among the quartet of pitching prospects.