A subsequent 65-acre donation by United Technologies in 2009 allowed for the construction of additional grass parking lots adjacent to the Stadium.

Pursuant to a lease agreement with the State, UConn plays all its home football games at Rentschler Field.

[7] The stadium is owned by the State of Connecticut, Office of Policy and Management, while operations are overseen by the quasi-public Capital Region Development Authority (CRDA).

Prior to the 2013 season, a new 28×73-foot wide and 15HD pixel video display was installed replacing the stadium's original scoreboard.

[10] On March 11, 2019, it was announced that the renovations at Dillon Stadium would not be completed on time for Hartford Athletic's home opener on May 4 against Charlotte Independence.

[12] On September 11, 2020, Governor Ned Lamont announced that Toronto FC would finish their season's home matches at Pratt & Whitney Stadium due to travel restrictions during the COVID-19 pandemic.

Attendance at Colonials games averaged a consistent 15,000 people, third place in the five-team league behind Omaha and Sacramento.

Events included a Hartford Whalers Alumni vs. Boston Bruins Alumni game, with an appearance from the Hanson Brothers, from the film Slap Shot, a double-header featuring both UConn men's and women's hockey teams, a Hockey Legends team faced off against the Mystery, Alaska Hollywood team, along with the Hanson Brothers from the movie Slap Shot,[20] and the second edition of the American Hockey League Outdoor Classic between the host Connecticut Whale and the Providence Bruins.