I find this to be rather fiddly to use - i keep clicking on a different game than i want to (perhaps i just have motor control problems?).
I'd like to see it show less games so that its easier to use, but with an option to change/update page to show games further back in the players history.
Stock sites usually have a selectable time range. This would be useful. It would be nice to see a time line on the bottom too. Maybe instead of the number of games, it could be a calendar based selection too.
Personally, I'd like to see a scroll bar along the bottom.
You could then review a person's entire ratings history, not just the last 300 games.
It would give a truer indication of ratings trends.