Body Language is the biggest visual act that can scare or attract an athlete and a coach in the play of sports.
What do I mean by "body language" you ask?
Body language would be described as the way people read others by the posture and movement of the body.
Perfecting this requires you to show that you aren't fatigued from the beginning and the ending of gameplay. This becomes completely mental to your opponents questioning why this individual still have that capacity to continue for such a period of time and not break. This will intimidate opponents into thinking they can't keep up with you and make coaches feel they should avoid an individual.
Eyes: Stare down opponents. The act of looking away can symbolize intimidation. They're also your keys to finding tendencies of your opponent(s)
Conditioning: Avoid resting hands on your waistline or above your head, and taking a knee or squatting. Run from beginning to end of a play. A dead period should be a constant jog. Don't the constant condition build and you become immune to feeling like it's hurting you instead.
Posture: Your athletic position or posture should always be the same. Scouting in film sessions can depict when an individual reaches the fatigue state by studying postures. Also, studying can reveal predictive traits of your own or opponent(s) traits.
These are all keys to getting an edge on your opponents to know when you can take advantage of a situation. Practice endurance and body reading with teammates or film session. Coaches, teach this to your athletes to create an elite group of individuals that will help become a more structured and sound team. Putting out a film of a relentless individual(s) will make opponents fear and question if they can keep up with the pace.
Remember you have to win in every aspect of the game to best great. Learn to use any and every of your resources.