Links:
[1] https://www.momsteam.com/health-safety/overuse-injuries-signs-symptoms-pain
[2] https://www.momsteam.com/return-play-after-sports-injury/many-doctors-allow-youth-athletes-return-play-in-pain-study-finds
[3] https://www.momsteam.com/sports/baseball/safety/preventing-pitching-injuries-in-youth-baseball