Kelly's offense is dynamic, as an early innovator during the early days of the spread, his grand valley state team averaged 58 points a game a record setting pace back in 2000 i believe.
The keys to his offense are threefold
1st)- is the concept of verical stems, most defensive schemes read the opposing pass routes wether it is in a spread or just any multiple reciever set, by watching the angles of the first few steps a reciever takes off the line. This essentailly is a tell for the route thats coming, so you have different starting steps for your whole bunch of crossing routes shallow or otherwise, slants, out patterns etc-- but in kellys "VERTICAL STEMS" usually 4 recievers will all break downfield. a literal jailbreak withthe four recievers dividing the field into 4 slices. The QB does not really read much in this offense, in fact the defense is put under enormous pressure because the ball is often thrown before the reciever breaks off his vertical route into the play route. So essentially Kelly's spread is mre about where the ball is going to go , then say charlie's which is about where the reciverers are going. Most of the time when Kelly's spread starts the recievers are always doing the same thing, breaking downfield and its up to the DB's to figure it out on the fly-- very tricky
2nd) There is actually alot of power running, not just draws or shuttle passes or quick handoffs to catch em by surprise. Kellys's running attack is based on running out of the shotgun but almost always behind pulling guards and tackles.
3rd) As the spread has caught on and so many coaches have there version, kelly has essentially not changed his concept much, what he has changed has been an ever increasin emphasis on FUNDAMENTALS. Blocking and tackling and attention to detail on every play--disciplined consistent execution has been what he has been doing to try and keep his version of the spread, particularly dynamic and with a big edge in execution over other forms.
Brain Kellys offense will be lots of fun to watch and looks like lots of fun to play in as well!
