Philip Rivers' cool efficiency will have brutal effect on breakout Colts player

Philip Rivers of the Indianapolis Colts on the sidelines | Steph Chambers/GettyImagesPhilip Rivers proved a few things for the Indianapolis Colts in Week 15's loss to the Seattle Seahawks. One is that, indeed, a long-retired quarterback who uses his high football IQ as much as his physical talent can truly lead an NFL offense, rusty or not. The quarterback also showed he doesn't have much arm strength and no speed.

The positive part is that head coach Shane Steichen is smart enough to understand how to design plays that will help Rivers be moderately successful. Instead of trying to create a lot of explosive plays, Steichen hopes his offense can methodically move the ball down the field and…