On the off chance

On the off chance - because of a slight possibility that something may happen or might be the case, just in case.

Example - "I went to the theatre on the off chance that there were tickets for the show left"

Image - https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfPW0RADx9aiTAa_HocVrtoMRyE0-H-89Q8W9N8RPR8j37MvFVv6i4X10wMgiCsDrHt5AwfenMpGNlhBoawO35PTkmJVSc0UIzgg9WBtlTWGQ8e7dQLVJ1QihTWXbzteIU2dV_zSaMjbsh/s1600/off+chance.png