A couple of winters ago I created a series of graphs that looked at the best pitchers by ten year spans who at some point ranked number one in the Bill James Starting Pitcher Rankings. Since that time I expanded the coverage of the Day By Day Database. This spreadsheet contains a graph with pitchers who spent at least 100 days in the number one slot based on dates between April and September. It’s a list of many of the greats of the last 80 years, and the graph shows how they rose and fell. I hope you enjoy it!