[4] In March 2007[6] Philly first hosted East Coast Derby Extravaganza (ECDX), an invitational weekend tournament at the Sportsplex in Feasterville (which had also become the league regular home) that hit its 10th anniversary event in 2016.

Considered a pick-up team, the Block Party is composed of skaters not already skating for the Liberty Belles or Independence Dolls who are interested in additional competitive playing time.

[18] The following year in Madison, a narrow loss to Gotham in the semifinal put Philly in the third-place game at Eastern Regionals, which they won against Carolina Rollergirls 112-48 to qualify for WFTDA Championships for the first time.

[19] At Championships in Portland, Oregon, Philly opened with a narrow victory over Bay Area Derby Girls which matched them up - again - against Gotham in the semifinal, who won handily.

[21] In 2009, PRG hosted the WFTDA Championships in Philadelphia,[11] where the Philly Roller Girls had a bye past the first round due to their first-place regional seeding.

[33] In 2015, Philly missed WFTDA Championships for the first time since 2007, by finishing in fourth place at the Division 1 Playoff in Dallas with a 178-154 loss to Rat City Rollergirls of Seattle.

[34] Philly had a repeat result in 2016 with a second consecutive day 3 loss to Rat City at the Vancouver Division 1 tournament, 134-114, to again finish in fourth place and miss Championships.

[37] In 2018, Philly qualified for WFTDA Playoffs as the eighth seed in A Coruña, Spain, and opened their weekend by defeating Stockholm Roller Derby by a score of 204-154.

[40] At the 2019 WFTDA International Championships in Montreal, Canada, Philly Liberty Belles opened their weekend by defeating eighth-seeded Texas Rollergirls by a score of 136-114.

Philly donated a portion of ticket proceeds from the East Coast Derby Extravaganza tournament to benefit the HERA Women's Cancer Foundation in both 2007[58] and 2008.