During his lifetime, did Lord Krishna get defeated in any war other than the one with Jarasandha?
Note that the defeats of Krishna may be either intentional or unintentional.
The assumption that he was defeated in one war itself is wrong. The conclusion of the 18 wars with Jarasandha was that Jarasandha died. So, Sri Krishna being defeated in any war doesn't even come in to question.
This has been explained here already.