I scrolled through 5 of your comments about staph but you are getting more and more blatant about something you have no idea about. Staph infection can be of a different severity levels and affects everyone differently. Fighter A fought with staph and fighter B did not - means absolutely nothing. If you had experience grappling (or even googling) - you would know that everyone has staph bacteria on a skin and in the nose - so everyone fights with staph using your logic, when you sweat a lot (nothing to do with hygiene btw, your pores are open and bacteria can enter deeper your body, bloodstream, joints, bones, lungs or heart. Staph infection can get really bad and can be life-threatening. Especially when left untreated it can easily transform a person into a bed-ridden guy in a matter of weeks.
Look into it - its that easy.