Luke Nussbaumer, younger brother of captain Jamie, made his senior ICC debut for Guernsey and claimed three top order wickets at Grainville before spinner Max Ellis then demolished the lower order as Nigeria submitted meekly for just 99.
Eighteen overs and one delivery later, Guernsey openers Matt Stokes (48) and GH Smit (38) had rushed their side to a 10-wicket win, the third victory of the week and puts them back on top of the table ahead of Oman on net run-rate.
Guernsey can now guarantee themselves a place in Saturday's final with a win over Jersey today.
More in Wednesdays Guernsey Press.
