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Early success as the Royals

The RiverDogs were founded in 1980 as the Charleston Royals and were a farm team of the Kansas City Royals. In their first season as the Royals, they won the South Atlantic League's Southern Division championship, but fell in the playoffs against Greensboro. Like the Pirates, the Royals were known for their pitching, because in 1981 pitcher Jeffery Gladden led the league with a 2.09 ERA. In 1982 batting may have caught up with the pitching as pitcher Danny Jackson led the league with a 10–1 record and slugger Cliff Pastornicky paced the South Atlantic League with a .343 batting average. In 1983 Mark Pirruccello set a single-season team record with 25 home runs. 1984 was an exciting season for Charleston as the city hosted the all-star game in which Tom Glavine and Pat Borders played. On the field the Royals went on to win the Southern Division and Kevin Seitzer was named league MVP.

Rainbows era

In 1985, the team was renamed the Charleston Rainbows and became affiliated with the San Diego Padres. From 1985 to 1987 were the building years as the Rainbows improved each season under a great pitching staff until 1988 when they won the Southern Division title but were bounced in the first round of the playoffs. The 1988 season was powered by a pitching staff whose combined ERA equaled 2.07. 1988 was the last of the "good ol' days", because starting in 1989 the team suffered 11 consecutive losing seasons. Poor play on the field translated into a South Atlantic League record, when in 1990 pitcher Charles Thompson registered 17 losses. In 1994 the team was renamed Charleston RiverDogs. Despite the name change, the losing continued. In 1997 saw the RiverDogs leave the 84-year-old College Park and move into the brand-new 5,500-seat Joseph P. Riley Jr. Park. The team also began its eight-year affiliation with the Tampa Bay Rays in 1997. The move to the "Joe" helped to spur a rise in total attendance, as the team set a record with an increase in over 100,000 fans. In 1998, the RiverDogs were the first professional baseball team to broadcast live video on the internet, and the first team to broadcast video of their entire home season.

Finally, in 2000 the 'Dogs posted their first winning season since 1988.

Return to the playoffs

In 2003 saw the beginning of a new era as the RiverDogs played well on the field and posted a winning season for the first time since 2000. In 2004 the RiverDogs secured the wildcard spot in the playoffs bringing Charleston a playoff series for the first time in 16 years. Charleston faced the hated rival Capital City in the first round but were swept two games to none. The RiverDogs became the Class Single-A affiliate of the New York Yankees on September 15, 2004. 2005 was another great season as the Riverdogs jumped out winning the first-half Southern Division Championship qualifying them for the playoffs for the first consecutive seasons in franchise history. The 2005 playoffs weren't as good to the RiverDogs as fans had hoped, because the RiverDogs fell to eventual champion the Kannapolis Intimidators two games to none. At the end of the 2005 season, Charleston was making an attempt to attract a Class Double-A team by expanding their stadium by a few hundred seats. 2006 saw a good performance on the field, but no playoffs as the RiverDogs posted a 78–62 record. 2007 saw a record year for winning seasons when they finished the season with a 78–62 record and securing their fifth consecutive winning season tying a Charleston professional baseball record with the Sea Gulls (1914–1917, 1919) (No team in 1918). A downside to the record tying season was that the 'Dogs failed to make the playoffs for the second straight season. 2008 brought a memorable year to Charleston, as the Riverdogs recorded their final record at 80–59 bringing their sixth consecutive winning season, breaking a record for the most consecutive winning seasons (a record that stood since 1919) in Charleston baseball history. The downside to 2008 was the third straight season the Riverdogs failed to make the playoffs – despite having the best record in the Southern Division each season, they never held the division lead at the end of a half-season to claim a playoff spot. The 2009 season saw the Riverdogs finish with a winning record again. In the first half the Riverdogs came up a game short to their arch-rival Greenville Drive, who are affiliated to the Boston Red Sox and never posed as a threat in the second half failing to make the playoffs for the fourth straight year.

Colbrunn era

After posting a 232–186 record, Riverdogs manager Torre Tyson was named the Tampa Yankees manager in High A baseball. The RiverDogs were quick to name hitting coach Greg Colbrunn as the new manager for the 2010 season. With the RiverDogs on the verge of making the playoffs each of the last four seasons, expectations were high for Colbrunn.^[]

The day following the 2015 Charleston church shooting, the RiverDogs decided to proceed with their regularly scheduled game, with Dave Echols, the team's general manager, saying: "We feel it is our duty not to let the acts of one radical human being dictate our lives". The RiverDogs donated the proceeds of the night's game to the charity set up for the Emanuel African Methodist Episcopal Church.

2021 restructuring

On November 7, 2020, the Yankees announced that Charleston would not be part of their minor league organization under the restructuring of Minor League Baseball for 2021. Instead, they were organized into the Low-A East as the Low-A affiliate of the Tampa Bay Rays. In 2022, the Low-A East became known as the Carolina League, the name historically used by the regional circuit prior to the 2021 reorganization.