While, I can't argue with the Cubs being the biggest disappointment in baseball, I have to go with Cleveland as baseball's biggest disappointment, and here's why: Their talent level, is much higher then the Cubs (eveyrbody knew before the season, Hendry buiilt a 4th/5th place team), at a lower cost. They were predicted by most pundits to be the serious threat to the White Sox, not the Tigers or the Twins, and the Indians failed miserably. So, I will say the Indians have been a bigger disappointment.