Jim Tomsula and Chip Kelly couldn't do it in their one season as head coach in San Francisco. Kyle Shanahan hasn't done it in two years with the 49ers.
The past three coaches in San Francisco have combined to lose eight straight games against the NFC West rival Cardinals heading into the first meeting this year Thursday night in Arizona.
The Niners' last victory in this rivalry came in Jim Harbaugh's final game as coach in 2014 when the playoff-bound Cardinals lost a most meaningless Week 17 game in San Francisco. It's not as if the Cardinals have been world-beaters during this stretch.