Last year, Zach Line (RB) had an overall excellent season. He rushed for 1494 yards, averaging over 6 yards per carry. That was good enough for first in C-USA and (I believe) tenth in the country. He is a great combination of size (230 lbs) and speed, with decent-to-above-average cutting ability in space, and good vision. Check out his 2010 highlight reel at http://www.youplusdallas.com/stories/smus-highlight-reel-featuring-zach-line.
Zach gives much needed diversity to the offensive scheme, being a bigger, stronger back who can carry a game himself. If the offensive line can get a good push, and Zach picks a good line (which he usually does), it will wreak havoc on the defense. This will draw the linebackers closer and closer to the line of scrimmage throughout the game, and give Padron more opportunities to look for his deep threat receivers (who I have talked about in previous posts). Coming from a background as a defensive player in highschool, he clearly has a good understanding of defensive schemes.
This Sunday against A&M, he will have an effective game, but because I believe SMU will be playing from behind for most of the game, SMU will most likely be very pass oriented after the middle of the third quarter and Zach won't have huge numbers. 90 yards on 22 to 24 carries will be a solid performance.