2002 Litespeed Ghisallo -- 9mm diam BB hole normal?

Here's a shot of the BB shell drain hole on a 2002 Litespeed Ghisallo. It measures ~9mm diameter.

Image: https://cimg6.ibsrv.net/gimg/bikeforums.net-vbulletin/512x288/2002_ghisallo_bb_hole_8mm_25pct_3e2a04e57641c05aa799b1f2a35569522500d080.jpg

I'm used to seeing a typical ~3mm diameter BB...