The Central City Diamonds are a baseball team operating out of Central City.
Sometime prior to 2015, the Diamonds were established as a baseball team in Central City.
In November 2015 as Lewis Snart, Leonard Snart, and Barry Allen (undercover) arrived at a location to steal some diamonds, a couple of security guards in the lobby were watching a Diamonds game on TV, telling the "janitors" that the "Diamonds don't stand a chance".
In spring 2016 while he and Cisco were at a bar, Dante requested the bartender to switch to the Diamonds game on the TV.
In November 2016, H.R. Wells noticed Cisco's depression over Dante's death and invited him to attend a Diamonds game together in a bid to cheer him up. Cisco was initially reluctant, as it reminded him too much of his brother, but eventually accepted. The pair purchased a number of snacks from vendors at the game, including hot dogs, nachos, and beer, and Cisco additionally bought a foam finger, which H.R. later took for himself. The Diamonds ultimately won the game, much to Cisco and H.R.'s joy.
The Chronicles of Cisco