Since EHS asked, here are my guesses at the games... Have only seen four of these teams this season, so this is mostly on schedule and records, a shaky way to go.
Mt. Eden over Analy (Does Mt. Eden still do that pregame thing with the basketballs in their school colors? I remember this from back in the 80's when they were a regular in the NCS playoffs. Thought it was kinda cool and certainly distinctive. Haven't seen 'em play since those days)
St. Mary's over Burton, a school I'd never even heard of until this announcement. I saw St. Mary's last week and thought they looked good beating Clovis North, though that opponent had a top player in street clothes.
St. Pat's over SHP (St. Pat's looked pretty decent even though they lost in the game I saw them vs. Dallas Jesuit; SHP is having a rough year, though they had a good win tonight)
Piedmont over J. Siena in a total guess. Piedmont has a better overall record, but Siena's schedule appears to me to be stronger
Mission over Aptos... Another total guess. Even MaxPreps and USA Today aren't sure who is even playing in this one... Hopefully, it's the SF one.
HMB over Marin Catholic in the finale, which should be a great one.