Following an ownership change, the then-Florida Marlins, led by new owner
Jeffrey Loria, hired Beinfest as its general manager and senior vice president on February 12, 2002. Through a number of trades and free agent acquisitions, Beinfest built upon the Marlins' existing foundation into a
2003 World Series. In 2002, Beinfest traded for
Dontrelle Willis, who would become the 2003
NL Rookie of the Year. Prior to the 2003 season, Beinfest acquired
Juan Pierre, who would later be regarded as the team's most valuable player that year, and also signed catcher
Iván Rodríguez, who would lead the Marlins in RBI in the 2003 Playoffs. On May 11, 2003, Beinfest replaced manager
Jeff Torborg with
Jack McKeon. The Marlins went 75–49 under McKeon's leadership, finished with a final record of 91–71, and made the playoffs by clinching the
NL Wild Card. Before the 2003 trade deadline, Beinfest made two key trades for the Marlins in its championship run. He traded for then-
American League saves leader and closer
Ugueth Urbina, who recorded saves in Games 1 and 5 of the
2003 World Series. After third baseman
Mike Lowell broke his left hand on August 30, Beinfest acquired
Jeff Conine just before the midnight deadline on August 31, 2003. The Marlins defeated the
San Francisco Giants, 3–1 in four games in the
2003 NLDS, and the
Chicago Cubs, 4–3 in seven games in the
2003 NLCS, to win the 2003 NL
Pennant. In the 2003 World Series, the Marlins became the champions of Major League Baseball by defeating the
New York Yankees 4–2 in six games. Following their championship season,
Baseball America named the Marlins Organization of the Year, and the
Negro Leagues Baseball Museum recognized Beinfest as the 2003 winner of the Rube Foster Legacy Award for NL Executive of the Year. Prior to the 2006 season, Beinfest re-tooled the Marlins' roster by acquiring numerous players via trades, the
Rule 5 draft, and
free agency. He traded for
Hanley Ramírez,
Aníbal Sánchez,
Ricky Nolasco, and others. Ramirez became the 2006 NL Rookie of the Year, and the second NL Rookie of the Year. Beinfest was acquired via trade during his tenure (as was Willis in 2003). Sanchez tossed the fourth
no-hitter in the Marlins' history on September 6, 2006, blanking the
Arizona Diamondbacks at
Dolphin Stadium. Sanchez was also one of four rookie pitchers on the Marlins to win 10+ games in 2006, along with Nolasco,
Josh Johnson, and
Scott Olsen, making the Marlins the first team ever to have four rookie pitchers record 10 wins in a season. Beinfest selected
Dan Uggla in the December 2005 Rule 5 draft. In 2006, Uggla established the Major League record for home runs by a rookie second baseman and became the first player in Major League history to be selected to the
MLB All Star Game the season after he was taken in the Rule 5 draft. Uggla was honored as the NL's Most Outstanding Rookie by Major League Baseball's players. During Beinfest's tenure, the Marlins have posted all but one of their top single-season win totals (91 in 2003, 2nd; 87 in 2009, 3rd; 84 in 2008, 4th; and 83 in 2004 and 2005, tied for 5th). ==President of baseball operations==