The 10 time A.L. ALL-Star went
3-3 with a 1.76 ERA and converted 44 of his 46 save opportunities in 2009, finishing the season second in the Majors with
a 95.7 percent save percentage. In 66.1 innings pitched, Rivera permitted 48 hits and 12 walks with 72 strikeouts while holding
opposing hitters to a .197 batting average. He helped lead the New York Yankees to the best record in Major
League Baseball and a sweep of the Minnesota Twins in the first round of the playoffs.
Since recording blown saves in his
first two chances in 2007, Mariano has converted 113 of 118 save opportunities (95.8 percent), the best ratio in the Majors
over that span. Mariano, whose 526 career saves ranks second all-time behind Milwaukee's Trevor Hoffman (591), reached the
40-save plateau for the seventh time in his career, second-most all-time behind Hoffman's nine.
The award was developed in 2005, as
part of a sponsorship agreement between Major League Baseball and package delivery company DHL Express. Previous winners have
included Jonathan Papelbon of the Boston red Sox in 2007 and Brad Lidge of the Philadelphia Phillies last season.