The Boston Celtics have won 17 championships in franchise history. That's the result of the front office in Beantown making smart decisions on draft night, during trade season, and free agency.

For this piece, we focused on the Celtics' history with free agents. The organization has been around since 1946, so upon researching and reviewing a good amount of Celtics news, we've come up with this list of the C's previous transactions

October 14, 1963

The Celtics signed Larry Siegfried, a combo guard who averaged 11.6 points and 3.3 assists in 446 games with the franchise.

Siegfried won five championships with Boston.

October 28, 1965

Don Nelson signed with the Celtics in 1965 after beginning his career with the Chicago Zephyrs and Los Angeles Lakers. Nellie put up 11.4 points and 5.2 boards over 11 seasons with Boston.

Nelson made the Hall of Fame in 2012 as a head coach. As a player, he won five rings with the Celtics.

September 28, 1977

Hall of Famer Dave Bing played one season with the Celtics in 1977-78. He put up 13.6 points and 3.8 assists before calling it a career.

July 24, 1979

The Celtics signed M.L. Carr as a veteran free agent. He averaged 6.3 points and 2.3 rebounds over 363 games with the franchise and won two titles.

January 22, 1980

Legendary point guard Pete Maravich signed with Boston to end his Hall of Fame career. He put up 11.5 points and 1.1 assists in 26 games during the 1979-80 campaign.

Maravich made the Hall of Fame in 1987.

September 10, 1992

The Celtics signed Xavier McDaniel after the rugged forward played one season with the New York Knicks. He averaged 11.3 points and 5.1 rebounds in 232 games with Boston.

July 25, 1994

One of the best dunkers in NBA history, Dominique Wilkins signed with the Celtics and played one year in Boston.

The Human Highlight Film averaged 17.8 points, 5.2 rebounds, and 2.2 assists per game during the 1994-95 season.

July 28, 1997

The Celtics inked Bruce Bowen, who went on to become a key player for the San Antonio Spurs later in his career.

Bowen averaged 4.5 points and 2.5 boards in 91 games with Boston.

March 4, 2005

Boston signed Hall of Famer Gary Payton as a free agent. The Glove put up 11.3 points, 6.1 assists, and 1.1 steals during his lone campaign with the Celtics.

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February 27, 2009

Stephon Marbury‘s final season in the NBA came with the Celtics. He appeared in 23 games and averaged 3.8 points before going to China and becoming a superstar.

July 8, 2009

Rasheed Wallace joined Boston, eager to help the franchise win another ring. He put up 9.0 points and 4.1 boards during the 2009-10 season.

The Celtics wound up losing to the Lakers in the 2010 NBA Finals.

August 4, 2010

Boston added Shaquille O'Neal, but this wasn't The Diesel fans saw in Los Angeles or Miami.

O'Neal averaged 9.2 points and 4.8 rebounds in his one year with the Celtics. He retired after the 2010-11 campaign.

September 29, 2014

The Celtics signed Evan Turner, who averaged 10.0 points, 5.0 rebounds, and 5.0 assists during his two-year run in Beantown.

July 8, 2016

Al Horford joined the Celtics after his stellar run with the Atlanta Hawks. The All-Star appeared in 208 games with Boston and compiled averages of 13.5 points and 7.0 rebounds.

July 14, 2017

Boston lured Gordon Hayward away from the Utah Jazz since the Celtics had his old college coach, Brad Stevens.

Hayward has averaged 13.6 points in 118 games in Beantown so far. He only played five minutes during the 2017-18 season after suffering a gruesome leg injury.

July 17, 2019

The Celtics signed Enes Kanter after acquiring Kemba Walker from the Charlotte Hornets in a sign-and-trade deal involving Terry Rozier.