Jason Tarver recalls meeting with 49ers general manager Bill Walsh, coach Steve Mariucci and front office executive Bill McPherson in 2001, hoping to get a job as a low-level assistant coach.
His resume included a master's degree in biochemistry and molecular biology and an award bestowed by the UCLA chemistry department for distinguished teaching in biochemistry.
All which of made Walsh wonder why Tarver was sitting at the table.
"The first thing he asked me was, 'Why don't you go out and invent something?'" Tarver said.
A dozen years later, Tarver, in his second season as defensive coordinator, has helped reinvent the way the Raiders play defense.
Quarterbacks Philip Rivers of San Diego and Alex Smith of Kansas City came out of games against the Raiders talking about the confusing array of blitzes and alignments thrown their way.
Long a four-man rush team with press coverage influenced by the late Al Davis, the Raiders under Tarver and coach Dennis Allen are mixing coverages, blitzing often and seldom showing the same thing twice.
There are 10 new starters, none of whom were big-ticket items in the offseason but have the shared trait of being enthusiastic workers who believe in team defense.
Of the 16 sacks generated by the Raiders, Lamarr Houston has the most at three and the remaining 13 are divided among 11 players.
Opponents are averaging 22 points per game and 99.0 yards per game rushing, with only the Denver Broncos and Peyton Manning putting up the kind of points (37) and yardage (536) the Raiders have given up far too often in the last 10 years.