Game not showing on website match history

I played a game last night and it's not showing up on my leagueoflegends.com match history, but it is showing on outside sites. It was probably one of my best games, at least in recent history. I went 15/0/6 and destroyed the enemy. But it's simply not showing up on the leagueoflegends.com website. Is this a known error? My other games from last night are showing up. =(