Nine teams from District One Class AAAA advance to the PIAA Class AAAA bracket. After Tuesday, it became clear that three of those nine will be from Delco.

Penn Wood (in a squeaker), Chester (in a cozy win) and Penncrest (in a clear victory) all punched their tickets to the state tournament. Here are the results from Tuesday night's second-round action ... and, perhaps more importantly, the district quarterfinal pairings:

DISTRICT ONE CLASS AAAA
Second Round - Tuesday
Plymouth Whitemarsh 58, Upper Dublin 51
Penncrest 49, Downingtown West 39
Pennsbury 40, Coatesville 39
West Chester Rustin 66, Norristown 43
Penn Wood 56, Bensalem 55
Neshaminy 45, Wissahickon 44
Souderton 64, Central Bucks South 54
Chester 50, Council Rock North 42

QUARTERFINALS - Friday
No. 8 Penncrest vs. No. 1 Plymouth Whitemarsh
No. 13 Pennsbury vs. No. 5 West Chester Rustin
No. 7 Neshaminy vs. No. 2 Penn Wood
No. 11 Chester vs. No. 3 Souderton

PLAYBACK ROUNDS - Friday
No. 24 Downingtown West vs. No. 17 Upper Dublin
No. 12 Norristown vs. No. 4 Coatesville
No. 15 Bensalem vs. No. 10 Wissahichon
No. 14 Central Bucks South vs. No. 6 Council Rock North
Semifinals: Tuesday, March 2, at Villanova
Championship: Friday, March 6, at Villanova
NOTE: Nine (9) teams qualify for the PIAA tournament.