Spectating Match History Games

For the life of me, I can't seem to find anywhere to even go back and watch my last played game. Can't watch that top lane matchup I was so interested in. Can't save those once-in-a-blue-moon clips. Either I'm missing something thats really unintuitive as a (watch this match) button, or one doesn't exist.

Let me clarify, I'm asking about viewing ANY past game in our 10 match history, not just ranked or normal or blah blah...