http://www.washingtonpost.com/news/spor ... ical-idea/
Kelley used an ESPN database to study college football history. He found that historically, there was no bigger indicator of victory than winning the turnover margin – teams that forced more turnovers than they committed won 80 percent of the time. But last season, Kelley said, a new trend emerged for the first time: Teams that recorded more plays of at least 20 yards won about 81 percent of the time.
It made sense to Kelley – bigger chunks of yardage meant scoring quicker and less opportunity to commit turnovers and drive-killing penalties. He became obsessed with finding a system designed for big plays. He found that on plays when two players touched the ball – a typical handoff or pass – teams gained 20 yards about 10 percent of the time. But when at least three players touched the ball – a trick play with a lateral involved – the percentage for gaining 20 yards rose to around 20 percent.
“That got me thinking,” Kelley said. “How could we develop a system for more than two people to touch the ball?”