Thanks for your quick reaction!
I am using 0.90 component/modules as I was having problems with upgrading to 0.91 so I had reverted to 0.90.
However I gave it a try with mod_joomleague_events_statistic 0.91 on top of component 0.90 and indeed it works fine!
With the older version quantity was showing fine in the showPlayers function.
My site is at www.lamenfis.nl