2021 WPIAL Class 3A boys lacrosse playoffs

First round

Shady Side Academy
BYE

Seneca Valley

12
@Seneca Valley
May 18, 6 p.m.
Canon-McMillan
2

Upper St. Clair
BYE

Pine-Richland

19
@Pine-Richland
May 18, 8 p.m.
Penn-Trafford
9

Quarterfinal round

Shady Side Academy

18
@Shady Side Academy
May 20, 8 p.m.
Seneca Valley
5

Upper St. Clair

12
@Shady Side Academy
May 20, 5:30 p.m.
Pine-Richland
5

West Semifinals

Shady Side Academy
20
@ North Allegheny
May 24, 8 p.m.
Upper St. Clair
13

Final

Shady Side Academy
8
@Robert Morris
May 27, 8 p.m.
North Allegheny
9

East Semifinals

Mt. Lebanon
9
@Canon-McMillan
May 24, 8 p.m.
North Allegheny
11

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Quarterfinal round

Mt. Lebanon

14
@Mt. Lebanon
May 20, 8 p.m.
Peters Township
7

North Allegheny

14
@Mt. Lebanon
May 20, 5:30 p.m.
Bethel Park
7

First round

Mt. Lebanon
BYE

Peters Township

6
@Peters Township
May 18, 6 p.m.
Norwin
5

North Allegheny
BYE

Bethel Park

5
@Bethel Park
May 18, 6 p.m.
Fox Chapel
4