Just booked a mini rtw for my son to work (in Australia) and watch three grand slam tennis tournaments, all in Y:
YYZ to IAD on UA
IAD to LAX on UA
LAX to SYD on UA (destination)
SYD to SIN on SQ
SIN to CDG on SQ (stop)
CDG to BRU on SN
BRU to LHR on SN (stop)
LHR to ORD on UA
ORD to YYZ on AC (only flight with fuel surcharge)
80,000 Aeroplan Points
$561.26 taxes plus $33.90 booking fee