WATERLOO/CEDAR FALLS - Both Waterloo West and Cedar Falls volleyball teams advanced in the first round of Class 4A regional play Monday night.

Waterloo West got off to a slow start but went on to defeat Mason City 19-25, 25-16, 25-23, 25-23. West will return to action at 7 p.m. Thursday as it visits crosstown rial and 11th-ranked Waterloo East in the regional semi-finals.

East earned a first-round bye.

Meanwhile, Cedar Falls dropped its first game and then cruised past Cedar Rapids Jefferson 19-25, 25-20, 25-21, 25-19.

The Tigers play Cedar Rapids Kennedy in the next round Wednesday night.

Read stories about both games in Tuesday's Courier.

Here are the scores:

Class 3A

ADM def. Dallas Center-Grimes 25-13, 23-25, 23-25, 25-13, 15-7

Algona def. Webster City 25-20, 25-15, 25-19

Atlantic def. Crestwon 25-10, 25-20, 20-25, 25-14

Benton Community def. Vinton-Shellsburg 25-15, 25-22, 26-24

Carlisle def. Saydel 25-14, 25-19, 25-19

Carroll def. Boone 25-17, 25-18, 25-23

Charles City def. New Hampton 25-13, 25-21, 25-17

Clarke def. Centerville 25-21, 25-18, 25-13

Davenport Assumption def. Clear Creek-Amana 25-22, 25-19, 25-23

Decorah def. Crestwood 26-24, 25-22, 25-19

Denison-Schleswig def. Storm Lake 25-21, 23-25, 15-25, 25-20, 15-12

Dubuque Wahlert def. Maquoketa 25-9, 25-12, 25-9

Fairfield def. Mount Pleasant 25-18, 25-18, 25-15

Forest City def. Clear lake 21-25, 25-19, 25-21, 16-25, 15-8

South Tama def. Grinnell 25-23, 16-25, 25-19, 16-25, 15-8

Harlan def. Glenwood 25-7, 25-12, 25-16

Iowa Falls-Alden def. Hampton-Dumont 25-14, 25-10, 15-25, 25-15

Keokuk def. Fort Madison 25-21, 25-23, 25-20

Knoxville def. Chariton 25-5, 23-25, 28-26, 25-20

Marion def. Center Point-Urbana 25-9, 25-18, 25-8

MOC-Floyd Valley def. LeMars 25-21, 25-10, 18-25, 25-22

Mount Vernon def. Central DeWitt 25-10, 25-17, 25-10

Nevada def. Ballard 25-13, 25-17, 25-13

Pella def. Norwalk 25-19, 25-18, 25-11

Sioux City Heelan def. Sergeant Bluff-Luton 25-10, 25-8, 25-13

Spencer def. Estherville-Lincoln Central 25-13, 25-13, 25-17

Waukon def. Oelwein 23-25, 22-25, 27-25, 25-19, 15-13

Waverly-Shell Rock def. Union 25-20, 24-26, 25-14, 25-22

West Delaware def. Independence 25-10, 25-17, 25-10

Western Dubuque def. Anamosa 25-14, 25-7, 25-10

Williamsburg def. Washington 25-4, 25-14, 25-7

Winterset def. Perry 25-16, 25-13, 25-14

Class 4A

Ames def. Fort Dodge 25-20, 25-22, 25-16

Cedar Falls def. Cedar Rapids Jefferson 19-25, 25-20, 25-20, 25-19

Cedar Rapids Xavier def. Linn-Mar 25-11, 20-25, 34-32, 25-23

Dubuque Senior def. Clinton 22-25, 25-15, 25-21, 25-14

Council Bluffs Lincoln def. Council Bluffs Jefferson 25-16, 25-6, 25-13

Davenport West def. Davenport North 25-17, 25-22, 25-18

Davenport Central def. North Scott 15-25, 25-22, 25-13, 25-22

Des Moines Roosevelt def. Southeast Polk 25-19, 25-21, 28-26

Indianola def. Des Moines Lincoln 25-8, 25-18, 25-11

Muscatine def. Burlington 25-20, 25-27, 25-22, 25-15

Newton def. Des Moines East 25-15, 25-17, 25-14

Oskaloosa def. Ottumwa 15-25, 26-24, 19-25, 25-17, 15-9

Sioux City North def. Sioux City West 25-10, 25-8, 25-7

Waterloo West def. Mason City 19-25, 25-16, 25-23, 25-23

Waukee def. Des Moines North 25-9, 25-5, 25-11

West Des Moines Dowling def. Des Moines Hoover 25-11, 25-17, 25-11