Henry Kilmister chiped in with two wickets for five runs after five overs, while Hadleigh O'Leary has one for seven off seven overs including two maidens, Joseph Abernathy 1/21 off four, Joel Clark 1/40 off six and Bruce Donald 1/15 off three.
The side looked set for a reachable target in reply, but when opener George Meyer fell second ball for a duck, the downhill slide began.
Fellow opener Donald top scored for WCS with 21, followed by Clark on 18, O'Leary not out on 17 and Kelt and Kilmister 16 apiece. The rest of the batting line-up got ones, twos or ducks adding to the WCS woes.
The side were all out for 113 after 27.5 overs and the Warren Marr-coached team now look forward to redeeming themselves against a Carlton School X1 at Market Hill on Sunday New Zealand time.