||Looks great. I think the date graph could be improved - it takes up a lot of room but only shows 4 months at a time. The picklist is annual, so if you wanted to see a continuum of someone's winnings over time you'd have to do a ton of clicks to choose years and then scroll horizontally within the years.
Since I doubt you need the granularity of individual days in the graph, or even weeks, I suggest you show one data point for each month, so a whole year fits easily in one row, and you could show 5-10 years worth of rows - a ton of data visible at once with no scrolling. Perhaps hovering or clicking on a month shows detailed daily info is someone really wants to see it.