Can a deviated septum affect my athletic performance?

Deviated septum. a deviated septum can cause nasal obstruction which may impact athletic performance. Have your nose evaluated by a board certified otolaryngologist,
Possibly. Not all deviated septae result in breathing obstruction. The best thing to do is to be examined by an ENT or plastic surgeon and discuss your concerns with then. Rarely will repairing a deviated septum turn you into an olympic champion.
You need to breathe! If your deviated septum is hindering your breathing, your athletic performance can certainly be influenced. You should have this evaluated to see if surgery would be beneficial.
Yes. If the deviated septum limits your ability to take in air and oxygen, it can affect your athletic performance.