Cal has never ever made a Final Four without at least one returning starter (starting double digit games the previous season).
1996- Padilla, Bright, Dingle, Camby.
2008- Kemp, Anderson, CDR, Dorsey, Dozier.
2011- Miller.
2012- Miller, Jones, Lamb.
2014- Poythress, WCS.
2015- Twins, WCS.
Notice that 96, 08, 12, and 15 were all 1 seeds and all had at least three returning starters.
That’s pretty good research right there. Funny that the 4 teams returning 3 or more starters just happen to be the 4 best teams he’s ever coached.