The Jonathan Papelbon trade is arguably the most under-rated move of the Ruben Amaro Jr. regime. RAJ was somehow able to move Papelbon despite his questionable character and declining talents.
Minor league pitcher Nick Pivetta came over to Philadelphia in the deal, and has become one of the Phillies best pitching prospects. Pivetta was promoted to Triple-A after winning 11 games with Reading and flashing a 3.41 ERA. His ERA in Lehigh Valley was even better in his five appearances, dipping to 2.55 and striking out 27 batters.
Between moving Papelbon and getting a quality pitcher in return, you have to mention this deal when looking for a move by RAJ that actually worked out for the Phillies.