I am currently rated around 1050 OTB (I've only played 30 rated games) and just came off three wins against a 1400, 1650, and 1800 players! Then I lost my last two games to a 1250 and 1395. Friends at the club feel I am underrated right now and am playing around a 1300, but I just think it's interesting how you can play great and beat some strong players and then lose to lower rated players playing like a fool. It's not overconfidence, it just seems that my last two games I've had trouble either finding plans or commiting to good ones.
Anyway...I find it interesting. Anybody have similar issues?