And in Thome, 39, they get a five-time All-Star who ranks 12th on baseball's all-time home run list with 564. He has hit 20 or more homers 15 times in his 16 full Major League seasons, including 23 in 2009.
The Dodgers will have to make room for them on both the 40-man and 25-man rosters.
Garland, 29, has won at least 10 games over each of the last seven seasons and currently has eight wins with Arizona this year. From 2002-2008, the right-hander averaged nearly 14 victories per season and won a career-high 18 in both 2005 and 2006 for the White Sox.
Colletti said the Dodgers had been eyeing Garland for some time. "We've been trying to add a starting pitcher for a while," he said.
Garland is owed approximately $1.2 million of his 2009 $6.25 million salary, plus either $10 million for 2010 or a $2.5 million buyout (or $1 million if Garland wishes to opt out).
Manager Joe Torre noted that the right-hander "was due to pitch against us Thursday, and chances are he may pitch Thursday for us, but this thing happened so late and so quickly we haven't really made that determination."
In the 2005 playoffs with the Chicago White Sox, Garland won Game 3 of the ALCS against the Angels, firing a complete game four-hitter. In Game 3 of the 2005 World Series vs. the Astros, Garland allowed just two earned runs over 7.0 innings in a game the White Sox would win in 15 innings.
Garland was originally drafted by the Chicago Cubs in the 10th round of the 1997 First-Year Player Draft and was traded as a minor leaguer from the Cubs to the White Sox in 1998.
Following eight seasons with the Sox, Garland was traded to the Angels before the 2008 season and went 14-8 in Anaheim. this season, Garland is 8-11 with a 4.29 ERA in 27 starts, but owns a 3.86 ERA in nine starts since the All-Star break.
The durable right-hander has been on the disabled list just one time in his career, missing only 15 days in 2003 with Chicago. Garland has tossed 1,793.0 career innings, including 1,606.1 since 2002, which ranks ninth in the Major Leagues over that time.
?Since his debut in 2000, the Valencia, California native has gone 114-100 with a 4.45 ERA in 305 career games (285 starts). The 29-year old was a 2005 American League All-Star and his and his 68 wins since 2005 rank 11th in the Major Leagues over that time.
Garland is a 1997 graduate of Kennedy High School in Granada Hills, where he was a two-time All-State Player of the Year and a high school All-America.
The Dodgers owe Arizona a player to be named later and cash.
The Thome deal came together at the last minute Monday morning, Colletti said. "We're not bringing him over here to play first base. We're bringing him over here to come off the bench and be a great influence in the clubhouse."
Thome batted .249 with 23 homers and 74 RBI in 107 games with the White Sox this year. He was originally selected by Cleveland in the 13th round of the 1989 First-Year Player Draft, and was a teammate of Manny Ramirez with the Indians for eight seasons from 1993-2000.
The Associated Press reported that Thome is owed $2,415,301 from his $13-million salary, and is eligible to become a free agent after the World Series. The White Sox also receive minor league infielder Justin Fuller.
Fuller, a left-handed hitter, was selected by the Dodgers in the 11th round of the 2006 First-Year Player Draft. He batted .254 with four homers and 17 RBI in 56 games with the Dodgers' Single-A Inland Empire affiliate in 2009. He is a .242 hitter with five homers and 59 RBI in 248 minor league games over four professional seasons.
The book on 39-year-old Thome reads like an introduction at the Hall of Fame ceremonies in Cooperstown.
He's a five-time All-Star, ranks 12th on baseball's all-time home run list with 564. He has hit 20 or more homers 15 times in his 16 full Major League seasons, including 23 in 2009. The left-handed hitter has also hit 30 or more homers 12 times, 40 or more six times, and 50 or more on one occasion in 2002, when he clubbed a career-high 52 with Cleveland. He hit at least 40 homers in four straight seasons from 2001-04, including a National League-leading 47 with Philadelphia in 2003.
Thome also ranks 39th on baseball's all-time RBI list with 1,562. He has logged at least 100 RBI in nine seasons, including six years in a row from 1999-2004. He was a three-time RBI champ in the American League during his time with Cleveland, driving in 120 runs in 1997, 127 in 1999, and 122 in 2002.
Among active players, Thome ranks third in home runs behind only Ken Griffey Jr. (625) and Alex Rodriguez (576). Also among active players, he ranks fifth in RBI, seventh with a .558 slugging percentage, and tied for sixth with a .405 on-base percentage. He leads active players with 1,619 walks and his 2,134 hits rank 13th. He also ranks 21st in baseball history in slugging percentage and 10th in walks.
Thome is one of only nine players in baseball history to accumulate 500 home runs, 1,500 walks, and 2,000 hits, joining Barry Bonds, Harmon Killebrew, Mickey Mantle, Mel Ott, Babe Ruth, Mike Schmidt, Frank Thomas, and Ted Williams.
Thome is a career .278 hitter in 2,267 games with Cleveland (1991-2002), Philadelphia (2003-05), and the Chicago White Sox (2006-09). He is a veteran of seven postseasons, including two World Series appearances with Cleveland in 1995 and 1997. He has hit 17 career post-season homers, and has batted .221 (45-for-204) with 37 RBI in 59 playoff games.