The St. Louis Cardinals' 2011 season was the team's 130th season in St. Louis, Missouri, its 120th season in the National League, and its sixth season at Busch Stadium III. The Cardinals began their season at home against the San Diego Padres on March 31, following an 86–76 (.531) record and second-place finish in the NL Central in 2010. The team returned to postseason play in 2011 as the Wild Card team, after finishing second in the NL Central to the Milwaukee Brewers by six games. The Cardinals beat the Philadelphia Phillies in five games in the Division Series and the Milwaukee Brewers in six games in the National League Championship Series. They defeated the Texas Rangers in the 2011 World Series in seven games.

Offseason departures and acquisitions

Cardinals co-owner, team treasurer, and member of the board of directors Andrew N. "Drew" Baur died suddenly at his home at 66, in Gulf Stream, Florida on February 20, 2011.

2011 St. Louis Cardinals season

Management

On October 18, 2010, manager Tony La Russa decided to return for his 16th season with the Cardinals after agreeing to terms for a new one-year contract, and a mutual option for a second year. Bullpen coach Marty Mason was not retained, but all the other coaches returned with extended contracts.

2011 St. Louis Cardinals season

On November 2, 2010, the team named a bullpen coach to replace Mason: Derek Lilliquist, the team's pitching coordinator for the last three seasons. Also announced that day: Greg Hauck was promoted to head athletic trainer, while longtime head trainer Barry Weinberg assumed duties as assistant athletic trainer.

2011 St. Louis Cardinals season

Hitters

On October 6, 2010, the Cardinals picked up the $16 million option on Albert Pujols.

On November 30, 2010, the Cardinals traded pitcher Blake Hawksworth for middle-infielder Ryan Theriot in a trade with Dodgers. They also signed free agent left-handed relief pitcher Brian Tallet. On December 12 the Cardinals cleared a space for Theriot at shortstop by trading incumbent shortstop Brendan Ryan to the Seattle Mariners for Class-A prospect Maikel Cleto.

On December 4, 2010, the Cardinals signed 34-year-old free agent Lance Berkman (formerly with the Houston Astros and then Yankees in 2010) to a 1-year, $8 million deal. Berkman, who was slated to play right field regularly for the first time since 2004, had slumped to a .248 average in 2010 and had hit particularly poorly after his midseason trade to the New York Yankees. As a Cardinal in 2011, he hit 31 home runs and was named NL Comeback Player of the Year.

On December 14, 2010, the Cardinals signed free agent catcher Gerald Laird to a one-year contract.

On January 15, 2011, Albert Pujols, through his agent Dan Lozano, told the Cardinals that the date to report to spring training (February 18) was the deadline to reach a deal on a new contract. Negotiations failed to produce a deal, and on February 16 Pujols suspended negotiations, citing an unwillingness to be distracted during the season, including spring training. Pujols received $16 million in 2011 and $111 million over his previous eight seasons. Pujols had asked for a 10-year deal, worth up to $300 million, averaging $30 million per year.

On January 21, 2011, the Cardinals signed free agent backup infielder Nick Punto to a one-year contract for $750,000.

In a surprise announcement on February 4, the Cardinals signed former Cardinal Jim Edmonds (2000–07) to a minor-league contract, and an invitation to Spring training as a non-roster invitee. He hit 241 home runs (4th in rank) as a Cardinal in his eight years, made three All-Star teams (2000, 2003, 2005), and won six Gold Gloves (2000–05). He needed seven home runs to reach 400. On February 18, Edmonds announced his retirement from baseball, citing the risk of permanent damage in his comeback from Achilles tendon surgery.

Pitchers

On October 6, 2010, the Cardinals picked up the option on LH relief specialist Trever Miller after he vested his option with his 45th appearance in 2010 (57 G), and finished the season healthy.

On November 16, 2010, the Cardinals signed free agent pitcher Jake Westbrook to a two-year deal through 2012 for $16.5 million, with a mutual option for 2013, and a full no-trade clause. The Cardinals had acquired Westbrook in a 2010 trade that sent Ryan Ludwick to the Padres.

On January 15, 2011, the Cardinals agreed to a one-year contract with reliever Kyle McClellan in avoiding arbitration. Salary was not announced.