I have a game where my opponent has run out of time due to closing their account. It is not a tournament game or anything important so I would like the facility to be able to just cancel such a game rather than claiming the win. In this particular game I am not winning and would feel a bit of a fraud gaining a win I do not deserve.

A similar situation arises when  a "win" by time out is shown as your "best  win."Had the game been completed it could just as easily have resulted in a "worst loss"designation by the current system. If you look at tournament comment you can note  another quite anomalous situation where current system has shown time outs as the "biggest upset " scored in the round-this also can be embarassing to both parties and is surely a statistical  nonsense in essence .

I agree to an extent, but how would chess.com remedy this and prevent people from leaving a game to time-out in order to stop their 'worst loss' statistic from getting any worse??!!

By online chess-settings tick out the line 'Auto claim by win on time' that's all i can say

Thanks for that Decker, giving it a try