Welcome @Lepage5397, my son is on the freshman team and plays catcher (mostly) but also pitches from time to time. To answer your question - he exclusively wears them on the back of his left arm during baseball season (he is right handed). Unlike pump sites which need to be moved due to the infusion of insulin causing tissue damage, the sensors work fine getting placed in the same area. With that said, we don’t place them in exactly the same place, but we have about 6 locations we rotate through that are all on the back of the left arm. During the rest of the year, we move between both arms. Placing them on the back of the arm we have never had one come off during baseball, weirdly we did have one ripped off this year in band…
Sorry about your diagnosis, my son was diagnosed at the same age, and the first year was a steep learning curve. His first baseball season was pretty good, but since we were still learning and experimenting on what would work we made lots of mistakes with his insulin, causing a few lows that he shouldn’t have had during games. The most important thing is don’t believe the only way to manage your son is to get his bg high to allow him to drop during the game. That is a very un-nuanced view of how to manage bg and exercise. Please ask many questions.
Currently my son pumps, but we use an un-tethered approach, so he gives approx. 50% of his basal insulin using Lantus every day, then uses the pump to provide the other half. Then during a game, he just unplugs his pump. That allows him to manage his bg between innings.
Please note that the CGM is great, but during games he won’t have his phone or receiver on him, as it will likely remain in the dugout, so the CGM only transmits to my wife and I during times he is in the dugout. Because of this, and also because my son’s bg is so variable during games because the effort can change significantly when a game is going well vs when a pitcher is struggling my son also does a blood stick every other inning to confirm the CGM, which can be 20 minutes behind his current bg.
If you or your son want to talk to my son about how he manages things, we can arrange that. My son is currently 15.
As your son’s insulin use ramps up and his natural pancreatic control goes down through the honeymoon process, the hardest exercise situation to control is when you have a high that needs to be corrected one - two hours prior to a game or exercise session. That is because the insulin is needed to get your son down, but the exercise will magnify the insulin uptake in his cells. At these times, we usually dose 1/2 - 3/4 of the normal amount of insulin and let the exercise do its thing, but please test often during these times and have plenty of carbs around.
My son is a 17 year old right handed pitcher diagnosed 9 years ago. He has had the Dex for about 3 years. We experimented with a bunch of different sites, but now exclusively use his left arm. He used to put a compression sleeve over, but now we just use Skin-tac when we apply a new sensor and he doesn’t need anything else. He has never had an issue with it coming off or loose in a game or practice and he plays 80-100 games a year. The Grif covering above is a great option to protect it though.
I recently got him an Applewatch, so he can see his blood sugar from the field when he he is not near the dugout. This has worked great for practices for him, although he would not use it in a game.