The PIAA baseball tournament begins Monday, with Butler County teams Butler and Moniteau in the mix.

See the full PIAA brackets below. Results and upcoming matchups will be updated throughout the tournament.

CLASS 6A

First round: June 1

3-4 Ephrata at 1-1 Pennsbury, 4 p.m.

3-3 Hempfield at 2-1 Hazleton, 4:30 p.m.

1-4 Neshaminy vs. 11-1 William Allen, at DeSales University, 6 p.m.

1-3 Pennridge at 12-1 La Salle College, 4 p.m.

1-6 Haverford at 3-1 Muhlenberg, 4:30 p.m.

11-2 Stroudsburg vs. 1-2 Owen J. Roberts, at Villanova Ballpark, 3 p.m.

1-5 Downingtown West at 3-2 Chambersburg, 4:30 p.m.

7-1 Butler at 6-1 Mifflin County, 4 p.m.

Quarterfinals: June 4

Semifinals: June 8

Final: June 11

at Penn State’s Medlar Field, 4:30 p.m.

CLASS 5A

First round: June 1

3-3 Greencastle-Antrim at 1-1 Upper Perkiomen, 4 p.m.

3-2 Lower Dauphin at 2-1 Pittston, 4:30 p.m.

1-3 Springfield-Delco vs. 11-1 Southern Lehigh, at Limeport Stadium, 7 p.m.

1-2 West Chester Rustin vs. 12-1 Frankford, at Abraham Lincoln HS, 4 p.m.

7-4 Thomas Jefferson at 3-1 Lampeter-Strasburg, 4:30 p.m.

7-2 South Fayette at 6-1 Hollidaysburg, 4 p.m.

7-3 Montour at 9-1 DuBois, 4:30 p.m.

3-4 New Oxford at 7-1 Upper St. Clair, 4 p.m.

Quarterfinals: June 4

Semifinals: June 8

Final: June 12

at Penn State’s Medlar Field, 4:30 p.m.

CLASS 4A

First round: June 1

3-3 Boiling Springs at 12-1 Conwell-Egan, 1 p.m.

2-2 TBD vs. 4-1 Montoursville, at Lycoming Valley IS, 6:30 p.m.

3-2 East Pennsboro vs. 2-1 TBD, at TBD

11-1 Northwestern Lehigh at 1-1 Holy Ghost Prep, 4 p.m.

12-2 Archbishop Wood at 3-1 Northern Lebanon, 4:30 p.m.

7-2 Elizabeth Forward at 6-1 Bellefonte, 4 p.m.

7-3 Hopewell vs. 10-1 General McLane, at Mercyhurst University, 4 p.m.

5-1 Somerset at 7-1 Indiana, 4 p.m.

Quarterfinals: June 4

Semifinals: June 8

Final: June 11

at Penn State’s Medlar Field, 1:30 p.m.

CLASS 3A

First round: June 1

3-2 Bermudian Springs vs. 12-1 Neumann-Goretti, at La Salle College HS, 1 p.m.

4-2 Warrior Run vs. 2-1 Dunmore, at Marywood University, 4:30 p.m.

12-2 Philadelphia Academy at 3-1 Trinity, 4:30 p.m.

11-1 Notre Dame-Green Pond at 4-1 Mifflinburg, 4 p.m.

6-2 Philipsburg-Osceola at 7-1 Ellwood City, 4 p.m.

7-4 Riverside vs. 10-1 Fairview, at Mercyhurst University, 1:30 p.m.

7-2 South Park at 5-1 Bedford, 4:30 p.m.

7-3 Avonworth at 6-1 Tyrone, 4 p.m.

Quarterfinals: June 4

Semifinals: June 8

Final: June 12

at Penn State’s Medlar Field, 1:30 p.m.

CLASS 2A

First round: June 1

4-1 South Williamsport at 3-1 Halifax, 4:30 p.m.

1-1 Faith Christian Academy vs. 12-1 Masterman, at Conwell-Egan HS, 4 p.m.

2-1 TBD at 11-1 Marian Catholic, 4 p.m.

4-2 Southern Columbia vs. 9-1 Moniteau, at Slippery Rock University, 4:30 p.m.

9-2 Redbank Valley at 7-1 Neshannock, 5 p.m.

10-2 Saegertown at 6-1 Mount Union, 4 p.m.

7-2 Fort Cherry at 5-1 Everett, 2 p.m.

7-3 Riverview vs. 10-1 Mercyhurst Prep, at Mercyhurst University, 11 a.m.

Quarterfinals: June 4

Semifinals: June 8

Final: June 11

at Penn State’s Medlar Field, 10:30 a.m.

CLASS 1A

First round: June 1

1-1 Dock Mennonite vs. 3-1 Christian School of York, at Dover HS, 4:30 p.m.

4-1 Benton vs. 11-1 Nativity BVM, at North Schuylkill HS, 2 p.m.

6-2 Homer Center vs. 5-1 Southern Fulton, at McConnellsburg HS, 7 p.m.

9-2 Clarion at 7-1 Eden Christian Academy, 3:30 p.m.

7-4 Western Beaver vs. 10-1 West Middelsex, at Slippery Rock University, 2 p.m.

7-3 Serra Catholic vs. 9-1 Elk County Catholic, at Berwind Park, 4 p.m.

7-2 Greensburg Central Catholic at 6-1 Claysburg-Kimmel, 6:30 p.m.

Quarterfinals: June 4

Semifinals: June 8

Final: June 12

at Penn State’s Medlar Field, 10:30 a.m.