Well.

Although D. O'Brien failed to train a winner today a "smart" punter should have secured a healthy POT investing in the ratio of 1x5:
MR2 6 2nd $2.0plNSW
MR8 2 2nd $3.2plNSW
MR9 2 3rd $2.4plNSW
which equals = out(1x5) =18 units
return = =38 units = 210.67% POT

Good luck to you.