Racing nerves can easily throw off focus, but a simple breathing trick helps:...

https://www.romeo-bookmarks.win/nerves-can-make-or-break-a-race-day-but-managing-them-is-easier-than-you

Racing nerves can easily throw off focus, but a simple breathing trick helps: inhale for 4 counts, then exhale slowly for 6 to 8 counts to calm the mind