From Wikipedia, the free encyclopedia.  https://en.wikipedia.org/wiki/Wilmington_Blue_Rocks

The Wilmington Blue Rocks are a Minor League Baseball team of the South Atlantic League and the High-A affiliate of the Washington Nationals. They are located in Wilmington, Delaware, and play their home games at Daniel S. Frawley Stadium.

The Blue Rocks played in the Carolina League, an advanced Single-A league in minor league baseball, from 1993 to 2020. The name "Blue Rocks" was chosen because of the blue granite found along the Brandywine River in Wilmington. The Blue Rocks play at Judy Johnson Field at Daniel S. Frawley Stadium in Wilmington's growing Riverfront district and were instrumental in bringing commerce and public attention to the once ignored and dilapidated area of the city.

The Blue Rocks played their first season in 1993 when the Peninsula Pilots were purchased and relocated to the riverfront in Wilmington, Delaware. Principal owner Frank Boulton and co-owner Bud Harrelson bought the franchise in 1992, moved the team from Hampton, Virginia, and changed their affiliation from the Seattle Mariners' farm system to the Kansas City Royals'.[2] When the franchise moved to Wilmington in 1993, the ballpark was known as Legends Stadium, after the sports legends of Delaware. After Frawley, the Wilmington mayor who played a major role in the creation of the team, died while playing a recreational basketball game, the stadium was renamed Daniel S. Frawley Stadium in his honor.

The Blue Rocks were a Kansas City farm team from their inception, except for the 2005 and 2006 seasons when the team was affiliated with the Boston Red Sox. In 2020, with the reorganization of the minor leagues, the Blue Rocks became an affiliate of the Washington Nationals.[3]