You don't usually see too many upsets in the quarterfinal stage of the D10 playoffs, given that it's an 8-team league. As such, you generally get a couple of mis-matches in the #1 vs. #8 games and #2 vs. #7 games, although there's a reason why they play these games. Let's take a look, starting in senior:
(1) Bishop Mac vs. (8) Orangeville
Season Series: BMAC 2-0
My Pick: BMAC by 31
Despite finishing last, the Orangeville Bears had a successful season, picking up 2 league wins (their first wins since the 2008 season). However, no #8 team has defeated a #1 seed and I don't see that changing here.
(2) Lourdes vs. (7) Centennial
Season Series: OLOL 2-0
My Pick: OLOL by 16
The Spartans have been playing well as of late, even knocking off #4 seeded JF Ross last week. Lourdes can't take the Spartans lightly, but I think they'll still pick up a double-digit win at home.
(3) St. James vs. (6) Guelph CVI
Season Series: STJ 2-0
My Pick: STJ by 9
This game is for an "AAA" CWOSSA berth, so it should be a highly contested berth. Both teams have been playing well as of late, and, despite the seeding, they battled to a 2-point difference about two weeks ago. I'll go with the Lions at home, but keep an eye on this one.
(4) JF Ross vs. (5) CWDHS
Season Series: JFR 2-0
My Pick: JFR by 7
Between injuries and inconsistency, the Royals struggled down the stretch, dropping their final two league games and finishing in 4th place. They're still at home for this game, but the stakes are ramped up as this game should also determine a CWOSSA "AAAA" qualifier (unless CCVI or ODSS can spring a big upset). I'll go with Ross but wouldn't be surprised to see CW win here.
Junior Quarterfinals
(1) Guelph CVI vs. (8) Orangeville
My Pick: GCVI by 25
(2) Bishop Mac vs. (7) CWDHS
My Pick: BMAC by 27
(3) St. James vs. (6) Lourdes
My Pick: STJ by 11
(4) Centennial vs. (5) JF Ross
My Pick: CCVI by 5