I don't subscribe, but I did my own research:
Pitchers on roster that have not had arm injuries: (8 total, 3 of which are true freshmen)
Andrew Abrahamowicz - Fr. (14 IP)
Luis Alvarado - Sr. (49 IP)
Byron Hood - Rs Jr. (21 IP)
Max Schreiber - Fr. (5.1 IP)
Mitch Steinhoff - Jr. (8.1 IP)
Matt Waldron - Jr. (152.1 IP)
Keegan Watson - Fr. (5.1 IP)
Mike Waldron - Jr. (18.2 IP) - listed as utility player on roster
Pitchers on roster that have had arm injuries: (11 total, 1 of which occurred before transferring to Nebraska)
Connor Curry - Rs Fr.
Reece Eddins - Jr.
Zack Engelken - Jr.
Nate Fisher - Jr.
Ethan Frazier - Jr.
Jake Hohensee - Sr.
Chad Luensmann - Jr.
Jake McSteen - Jr.
Robbie Palkert - Jr.
Paul Tillotson - Rs Fr.
Matt Warren - Sr. - injury occurred while at Creighton
So 10 of 18 roster pitchers have had some sort of arm/shoulder injury while at Nebraska, which is 56%. 10 of 15 pitchers that have been in the program for at least a year have had an arm injury, which is 67%.
Of the pitchers who have not had an arm injury, only Matt Waldron (152.1 IP) has thrown more than 50 innings. Only 2 have thrown over 22 innings.
I know arm injuries seem to be more common in baseball these days, but this is getting to ridiculous levels. At some point you have to stop thinking it's bad luck and you have to start looking at your practice, workload, and strength & conditioning practices. Of course it's going to be hard for Erstad to have much success with these types of numbers, but a lot of the blame has to be placed on him and his staff.
Edit: Added Mike Waldron - he's listed as a utility player, but he has pitched some
Edit: Took Matt Warren out of the numbers as his injury occurred while at Creighton