Top 20 American Sportscasters Of All-Time

Sports Illustrated has published a list of the top 20 American sportscasters of all time, a slideshow of which you can view HERE. These sorts of  lists are intended to provoke good-natured debate, I suppose. I might quibble with their relative rankings, but this list does include all the big names I expected. Though I think it reflects a certain obvious bias that 9 of the top 12 are all baseball broadcasters.