The change from No. 5 to No. 4 won't just be seen in the Eagles' huddle.
It will be seen on the backs of fans throughout the region, if the NFL's jersey-sales figures on the NFL's website for April are an early indication.
New Eagles starter Kevin Kolb's No. 4 was ranked 12th in sales.
If that is a substantial feat for a quarterback with two career starts, consider that the best-selling jersey for the month was rookie Tim Tebow's No. 15 for Denver. Tebow had the best-selling rookie jersey since the NFL started keeping track in 2006. Thirty percent of the orders came from Florida.