The Orioles also made several trades to bring in needed players. They first traded disgruntled reliever Steve Kline for LaTroy Hawkins, then traded for outfielder Corey Patterson, who brought speed and defense to the outfield, and traded former closer Jorge Julio and John Maine for experienced starter Kris Benson. The Orioles also addressed future free agents by extending the contract of outfielder Jay Gibbons and third baseman Melvin Mora, and recently signed a contract extension with second baseman Brian Roberts. The team's Opening Day roster featured top prospect Nick Markakis, a potential A.L. "Rookie of the Year", the best young position player the Orioles' farm system has produced since Brian Roberts. Markakis represents the revival of the Orioles' farm system, which features four players listed in Baseball America's 2006 list of the top 100 prospects in minor league baseball.