https://ethpool.org/miners/241df8b90b050cab32e265ca24075f42065802aa/blocks

This account received 3 uncles in less than 24 hours, very lucky or...

I also noticed that some addresses earn "T credits" quickly inexplicably, even with very low hashrate in a few days are already at the top of the list able to get a new block.

Sad to see a pool of this size acting that way.