The baseball postseason is set to begin this weekend. The Colorado High School Activities Association announced regional pairings for Class 5A, 4A and 3A on Wednesday.

The winners of each game will play each other for the regional championship. Regional champions will advance to next week’s state tournament.

Below are the matchups for each classification with the host school in bold.

Class 5A

REGION 1

(1) Regis Jesuit vs. (32) Bear Creek

(16) Horizon vs. (17) Fruita Monument

REGION 2

(8) Fossil Ridge vs. (25) Pine Creek

(9) Douglas County vs. (24) Ralston Valley

REGION 3

(4) Mountain Vista vs. (29) Fort Collins

(13) Legend vs. (20) Valor Christian

REGION 4

(5) Mullen vs. (28) Heritage

(12) Broomfield vs. (21) Far Northeast Warriors

REGION 5

(3) Chaparral vs. (30) Chatfield

(14) Brighton vs. (19) Loveland

REGION 6

(6) Vista Ridge vs. (27) Eaglecrest

(11) Rocky Mountain vs. (22) Rock Canyon

REGION 7

(7) Pueblo West vs. (26) Lakewood

(10) Cherokee Trail vs. (23) Dakota Ridge

REGION 8

(2) Legacy vs. (31) ThunderRidge

(15) Grandview vs. (18) Arvada West

Class 4A

REGION 1

(1) Palisade vs. (32) Aurora Central

(16) Windsor vs. (17) Falcon

REGION 2

(8) Cheyenne Mountain vs. (25) Roosevelt

(9) Pueblo Central vs. (24) Green Mountain

REGION 3

(4) Northfield vs. (29) Battle Mountain

(13) Montrose vs. (20) Denver North

REGION 4

(5) Ponderosa vs. (28) Thompson Valley

(12) Thomas Jefferson vs. (21) Lewis-Palmer

REGION 5

(3) Golden vs. (30) Mountain View

(14) Fort Morgan vs. (19) Pueblo East

REGION 6

(6) Riverdale Ridge vs. (27) Canon City

(11) Summit vs. (22) Erie

REGION 7

(7) Pueblo County vs. (26) Discovery Canyon

(10) Severance vs. (23) Air Academy

REGION 8

(2) Rifle vs. (31) Evergreen

(15) D’Evelyn vs. (18) Northfield

Class 3A

REGION 1

(1) Eaton vs. (32) Englewood

(16) Kent Denver vs. (17) Coal Ridge

REGION 2

(8) Alamosa vs. (25) La Junta

(9) Colorado Academy vs. (24) Moffat County

REGION 3

(4) Sterling vs. (29) Middle Park

(13) Delta vs. (20) Bennett

REGION 4

(5) Brush vs. (28) Salida

(12) Resurrection Christian vs. (21) Basalt

REGION 5

(3) Lutheran vs. (30) Platte Valley

(14) The Classical Academy vs. (19) Jefferson Academy

REGION 6

(6) North Fork vs. (27) Strasburg

(11) Bayfield vs. (22) Peak to Peak

REGION 7

(7) Lamar vs. (26) Liberty Common

(10) Manitou Springs vs. (23) Montezuma-Cortez

REGION 8

(2) University vs. (31) Prospect Ridge Academy

(15) Faith Christian vs. (18) The Academy