Do you think there is a possibility that pheromones could effect how you play sports? well in a positive way lol. One spray of ammo before practice and scored 3 TDs 
Self effects can include self confidence, also there are some advanced products that help with focus and clarity. 
I would say it depends on the sport.
None is probably the phero with the most important and immediate physical impact - Its confidence boositng and increased aggression can have beneficial effects in training and active sports - They also have downsides too of course.
Then there are pheros that can support the need for cool, teamwork and strategy - A314 and maybe plain rone could play a role here.
Hmm.. I wonder what it would be like if you took a lineman (American football) and put like 50 mcgs of Androsterone on him..