Yes....I see this happening more and more.
...and it's not just athletics.
My little niece had her dance recital on Pentecost Sunday at 12:30. There's absolutely no way she could make it to church, on a major Feast Day, and get back to the venue, dressed, warmed up and ready to go. I was very upset.
She's only 11, and they take classes for 6 months, which culminates in this one event. For her to skip her recital would be to negate 6 months effort....and break her heart.
I told her I was going to church first, and would try to make her recital. Thankfully, her group was one of the last ones to perform. As it was, I had to stand in the doors until "between" numbers and then try to find the family who were holding a seat for me.
The nephews often had baseball practice on Sundays....they would skip those.
However, I hear other kids having competitions, driving lessons, etc. ...all on Sunday mornings.
Sundays are not longer "special" to the secular world. Shops aren't closed. People aren't dressed in their finest. Families don't gather and spend time together. It's a sad sign of the times.