Pitching Speeds in WCWS

[CoachFP]

I pulled up this video of Alabama from just 2 years ago and was watching Kelsie Dunn pitch against Hawaii. Look at the pitching speeds posted on the tv monitor. 60-61 mph. She was/is a good pitcher who is not considered "slow". Now this year Trainor and Rickets are throwing 71-73. Does anyone think that they are that much faster than a Kelsie Dunn?
#1 Alabama v Hawaii softball May 30, 2010 super regional Jenna Rodriguez - YouTube

 

[PEPPERS]

I had the pleasure of seeing both Dunne and Traina pitch in games. IMO Dunne had great spin and movement and even the umps had trouble keeping up with the movement and she often had strikes called balls because the ump would give up on her pitches before the break.

Traina has good movement but not as good as Dunne, Traina’s movement combined with her great speed makes her effective.

I read where Cat Osterman can throw around 70, but was more effective around 62 -64 because her pitches had more movement at that speed.

 

[CoachFP]

I have seen Ricketts in person and while she throws pretty hard it is definitely not above 65mph.