I have bad luck, first of all, I've never gotten 50 xp or higher on infection, I of 12 people got slammed into a iron pole, you know, I never get lucky, if anyone gots any tips of how to get lucky voting be sure to post down here, I really really really really really need it, This is me...
It will happen someday, don't worry. I got lucky barely this week with 50 xp and I been playing Infection since like August.
50exp is either rarer than I thought or you're really unlucky. I saw this guy get it twice in one week so I figured it happened quite often but I guess not.