National Pro Fastpitch (English Wikipedia)

"Rebellion Out for 2017". Fastpitch News. 16 January 2017. Retrieved 17 January 2017.
Kyllo-Kittleson, Michael (November 14, 2019). "Commotion Leads NPF Expansion to West Coast". National Pro Fast Pitch. Retrieved November 14, 2019.

flosoftball.com

Chez Sievers (2 May 2017). "National Pro Fastpitch Adds Chinese Team To 2017 Season". FloSoftball.com. Retrieved 3 May 2017.
Chez Sievers (28 January 2018). "Scrap Yard Dawgs Announce They Are Leaving NPF". FloSoftball.com. Retrieved 29 January 2018.
"USSSA Pride Part Ways With The NPF, Opt For Non-Renewal". flosoftball.com. September 13, 2019. Retrieved September 13, 2019.

geocities.com

"Steve Dimitry's IWPSA Web Page". Archived from the original on 2009-10-20. Retrieved 2009-10-04.

justinsworldofsoftball.com

"NPF'S TEXAS CHARGE DISSOLVED; WILL NOT PARTICIPATE IN 2018 SEASON". Justin's World of Softball. 14 October 2017. Retrieved 29 January 2018.

neriptide.com

"Riptide to Suspend Play for 2009". New England Riptide. 2009-03-06. Retrieved 2009-02-15.

nfca.org

"Women's Professional Fastpitch Kicks Off In June 2022". National Fastpitch Coaches Association. 2021-09-30. Retrieved 2021-10-16.

ohio.com

Michael Beaven (28 January 2018). "Professional softball: Future of Akron Racers in doubt, no pro games to be played at Firestone Stadium in 2018". Ohio.com. Retrieved 30 January 2018.
"Professional softball: Akron Racers become Cleveland Comets". Archived from the original on 2018-02-02. Retrieved 2018-02-02.

si.com

Kayla Lombardo (23 October 2015). "NPF introduces Houston Scrap Yard Dawgs as league's sixth team". Sports Illustrated. Retrieved 25 October 2015.

web.archive.org

"The National Pro Fastpitch". the National Pro Fastpitch. Archived from the original on April 17, 2019. Retrieved 2021-03-07.
"NPF Announces 2011 Schedule". ProFastpitch.com. 13 January 2011. Archived from the original on September 5, 2015. Retrieved 15 May 2011.
"NPF Announces New Team in Pennsylvania". profastpitch.com. 19 November 2013. Archived from the original on December 3, 2013. Retrieved 23 April 2015.
"NPF Announces New Team in Texas for the 2015 Season". Nashville, TN: National Pro Fastpitch. January 9, 2015. Archived from the original on June 26, 2015. Retrieved January 9, 2015.
"TRANSACTIONS". ProFastpitch,com. 12 October 2017. Archived from the original on April 19, 2016. Retrieved 29 January 2018.
"National Pro Fastpitch Adds Aussie Spirit in 2018". ProFastpitch.com. 28 December 2017. Archived from the original on January 2, 2018. Retrieved 29 January 2018.
"National Pro Fastpitch (NPF) Terminates Houston-Based Scrap Yard Dawgs". NPF. Archived from the original on February 1, 2018. Retrieved January 31, 2018.
"Professional softball: Akron Racers become Cleveland Comets". Archived from the original on 2018-02-02. Retrieved 2018-02-02.
Walton, Julie (October 30, 2018). "Softball Canada Joins National Pro Fastpitch". National Pro Fast Pitch. Archived from the original on April 17, 2019. Retrieved November 2, 2019.
"National Pro Fastpitch Cancels 2020 Season due to COVID-19". National Pro Fastpitch. May 15, 2020. Archived from the original on May 17, 2020.
"National Pro Fastpitch Suspends Games for 2021 season". National Pro Fastpitch. December 3, 2020. Archived from the original on December 3, 2020.
"NPF Suspends League Operations". Archived from the original on August 1, 2021. Retrieved 4 August 2021.
"National Pro Fastpitch League Leaderboard All Time". Profastpitch.com. Archived from the original on February 27, 2008. Retrieved August 20, 2019.
"Steve Dimitry's IWPSA Web Page". Archived from the original on 2009-10-20. Retrieved 2009-10-04.