| 2021-04-20 14:30:25Tuesday, April 20, 2021 | Penylan  | 14:30:252:30 pm |  Rhiwbina | Alliance | Penylan Club |
| 2021-04-21 18:00:07Wednesday, April 21, 2021 | Penylan | 18:00:076:00 pm | Rhiwbina | CMWL | Penylan Club |
| 2021-04-24 14:30:11Saturday, April 24, 2021 | Rhiwbina | 14:30:112:30 pm |  Barry Athletic | PG2 | Rhiwbina Recreation Club |
| 2021-04-24 14:30:21Saturday, April 24, 2021 | Llantrisant  | 14:30:212:30 pm | Rhiwbina | Friendly | Llantrisant Bowls Club |
| 2021-04-27 14:30:31Tuesday, April 27, 2021 | Rhiwbina | 14:30:312:30 pm |  Windsor, Penarth | Alliance | Rhiwbina Recreation Club |
| 2021-04-28 18:00:21Wednesday, April 28, 2021 | Rhiwbina | 18:00:216:00 pm |  St. Fagan's | CMWL | Rhiwbina Recreation Club |
| 2021-05-01 14:30:01Saturday, May 1, 2021 | Rhiwbina | 14:30:012:30 pm | St. Fagan's | PG1 | Rhiwbina Recreation Club |
| 2021-05-01 14:30:24Saturday, May 1, 2021 | St. Fagan's | 14:30:242:30 pm | Rhiwbina | PG2 | St. Fagan's Bowls Club |
| 2021-05-04 14:30:46Tuesday, May 4, 2021 | St. Fagan's | 14:30:462:30 pm | Rhiwbina | Alliance | St. Fagan's Bowls Club |
| 2021-05-05 18:00:09Wednesday, May 5, 2021 | Whitchurch  | 18:00:096:00 pm | Rhiwbina | CMWL | Whitchurch Bowling Club |
| 2021-05-08 14:30:15Saturday, May 8, 2021 | Rhiwbina | 14:30:152:30 pm |  St. Alban's | WBA | Rhiwbina Recreation Club |
| 2021-05-08 14:30:38Saturday, May 8, 2021 | Pontyclun  | 14:30:382:30 pm | Rhiwbina | PG2 | Pontyclun Athletic Bowls Club |
| 2021-05-11 14:30:13Tuesday, May 11, 2021 | Rhiwbina | 14:30:132:30 pm |  Cardiff | Alliance | Rhiwbina Recreation Club |
| 2021-05-12 18:00:45Wednesday, May 12, 2021 | Rhiwbina | 18:00:456:00 pm |  Mackintosh | CMWL | Rhiwbina Recreation Club |
| 2021-05-15 14:30:33Saturday, May 15, 2021 | Llantrisant | 14:30:332:30 pm | Rhiwbina | WBA | Llantrisant Bowls Club |
| 2021-05-15 14:30:59Saturday, May 15, 2021 | Cardiff Athletic  | 14:30:592:30 pm | Rhiwbina | PG2 | Cardiff Athletic Bowls Club |
| 2021-05-19 18:00:43Wednesday, May 19, 2021 | Cardiff | 18:00:436:00 pm | Rhiwbina | CMWL | Cardiff Bowling Club |
| 2021-05-20 14:30:27Thursday, May 20, 2021 | Rhiwbina | 14:30:272:30 pm |  Penarth | Alliance | Rhiwbina Recreation Club |
| 2021-05-22 14:30:17Saturday, May 22, 2021 | Barry Romilly  | 14:30:172:30 pm | Rhiwbina | PG2 | Barry Romilly Bowling Club |
| 2021-05-22 14:30:52Saturday, May 22, 2021 | Rhiwbina | 14:30:522:30 pm |  Pentyrch | WBA | Rhiwbina Recreation Club |
| 2021-05-23 14:30:44Sunday, May 23, 2021 | Rhiwbina | 14:30:442:30 pm |  Plymstock | Friendly - Mixed | Rhiwbina Recreation Club |
| 2021-05-25 14:30:39Tuesday, May 25, 2021 | Pontyclun | 14:30:392:30 pm | Rhiwbina | Alliance | Pontyclun Athletic Bowls Club |
| 2021-05-26 18:00:00Wednesday, May 26, 2021 | Rhiwbina | 18:00:006:00 pm | Cardiff Athletic | CMWL | Rhiwbina Recreation Club |
| 2021-05-29 14:30:53Saturday, May 29, 2021 | Ely Valley  | 14:30:532:30 pm | Rhiwbina | PG2 | Ely Valley Bowling Club |
| 2021-06-01 14:30:57Tuesday, June 1, 2021 | Rhiwbina | 14:30:572:30 pm |  Whitchurch Hospital | Alliance | Rhiwbina Recreation Club |
| 2021-06-02 18:00:32Wednesday, June 2, 2021 | Whitchurch Hospital | 18:00:326:00 pm | Rhiwbina | CMWL | Whitchurch Hospital Bowls Club |
| 2021-06-05 14:30:34Saturday, June 5, 2021 | Rhiwbina | 14:30:342:30 pm |  St. Joseph's | PG2 | St. Joseph's Bowls Club |
| 2021-06-08 14:30:42Tuesday, June 8, 2021 | Rhiwbina | 14:30:422:30 pm | Cardiff Athletic | Alliance | Rhiwbina Recreation Club |
| 2021-06-09 18:00:49Wednesday, June 9, 2021 | Rhiwbina | 18:00:496:00 pm | Pentyrch | CMWL | Rhiwbina Recreation Club |
| 2021-06-12 14:30:13Saturday, June 12, 2021 | Rhiwbina | 14:30:132:30 pm | Pontyclun | PG2 | Rhiwbina Recreation Club |
| 2021-06-15 14:30:32Tuesday, June 15, 2021 | Rhiwbina | 14:30:322:30 pm | St. Joseph's | Alliance | Rhiwbina Recreation Club |
| 2021-06-16 18:00:48Wednesday, June 16, 2021 | Taff's Well  | 18:00:486:00 pm | Rhiwbina | CMWL | Taff's Well Bowling Club |
| 2021-06-19 14:30:34Saturday, June 19, 2021 | Windsor, Penarth | 14:30:342:30 pm | Rhiwbina | PG1 | Windsor Bowls Club |
| 2021-06-19 14:30:50Saturday, June 19, 2021 | Rhiwbina | 14:30:502:30 pm | Windsor, Penarth | PG2 | Rhiwbina Recreation Club |
| 2021-06-22 14:30:40Tuesday, June 22, 2021 | Mackintosh | 14:30:402:30 pm | Rhiwbina | Alliance | Mackintosh Bowling Club |
| 2021-06-23 18:00:46Wednesday, June 23, 2021 | Rhiwbina | 18:00:466:00 pm | Penylan | CMWL | Rhiwbina Recreation Club |
| 2021-06-26 14:30:24Saturday, June 26, 2021 | Cardiff | 14:30:242:30 pm | Rhiwbina | PG1 | Cardiff Bowling Club |
| 2021-06-29 14:30:08Tuesday, June 29, 2021 | Rhiwbina | 14:30:082:30 pm | Whitchurch | Alliance | Rhiwbina Recreation Club |
| 2021-06-30 18:00:59Wednesday, June 30, 2021 | St. Fagan's | 18:00:596:00 pm | Rhiwbina | CMWL | St. Fagan's Bowls Club |
| 2021-07-03 14:30:37Saturday, July 3, 2021 | Rhiwbina | 14:30:372:30 pm |  Beaufort | PG1 | Beaufort Bowls Club |
| 2021-07-03 14:30:50Saturday, July 3, 2021 | Whitchurch Hospital | 14:30:502:30 pm | Rhiwbina | PG2 | Whitchurch Hospital Bowls Club |
| 2021-07-06 14:30:22Tuesday, July 6, 2021 | Rhiwbina | 14:30:222:30 pm | Penylan | Alliance | Rhiwbina Recreation Club |
| 2021-07-07 18:00:08Wednesday, July 7, 2021 | Rhiwbina | 18:00:086:00 pm | Whitchurch | CMWL | Rhiwbina Recreation Club |
| 2021-07-08 14:30:34Thursday, July 8, 2021 | Rhiwbina | 14:30:342:30 pm |  Welsh VIs | Friendly | Rhiwbina Recreation Club |
| 2021-07-10 14:30:28Saturday, July 10, 2021 | Llanbradach  | 14:30:282:30 pm | Rhiwbina | PG1 | Llanbradach Bowling Club |
| 2021-07-10 14:30:34Saturday, July 10, 2021 | Rhiwbina | 14:30:342:30 pm | Llanbradach | PG2 | Rhiwbina Recreation Club |
| 2021-07-13 14:30:45Tuesday, July 13, 2021 | Windsor, Penarth | 14:30:452:30 pm | Rhiwbina | Alliance | Windsor Bowls Club |
| 2021-07-14 18:00:10Wednesday, July 14, 2021 | Mackintosh | 18:00:106:00 pm | Rhiwbina | CMWL | Mackintosh Bowling Club |
| 2021-07-17 14:30:44Saturday, July 17, 2021 | Cardiff Athletic | 14:30:442:30 pm | Rhiwbina | PG2 | Cardiff Athletic Bowls Club |
| 2021-07-20 14:30:05Tuesday, July 20, 2021 | Rhiwbina | 14:30:052:30 pm | St. Fagan's | Alliance | Rhiwbina Recreation Club |
| 2021-07-21 18:00:17Wednesday, July 21, 2021 | Rhiwbina | 18:00:176:00 pm | Cardiff | CMWL | Rhiwbina Recreation Club |
| 2021-07-22 14:30:26Thursday, July 22, 2021 | Rhiwbina | 14:30:262:30 pm |  WBA President | Friendly | Rhiwbina Recreation Club |
| 2021-07-24 14:30:14Saturday, July 24, 2021 | Barry Athletic | 14:30:142:30 pm | Rhiwbina | PG1 | Barry Athletic Bowls Club |
| 2021-07-27 14:30:32Tuesday, July 27, 2021 | Cardiff | 14:30:322:30 pm | Rhiwbina | Alliance | Cardiff Bowling Club |
| 2021-07-28 18:00:18Wednesday, July 28, 2021 | Cardiff Athletic | 18:00:186:00 pm | Rhiwbina | CMWL | Cardiff Athletic Bowls Club |
| 2021-07-31 14:30:23Saturday, July 31, 2021 | Windsor, Penarth | 14:30:232:30 pm | Rhiwbina | PG2 | Windsor Bowls Club |
| 2021-07-31 14:30:26Saturday, July 31, 2021 | Rhiwbina | 14:30:262:30 pm | Windsor, Penarth | PG1 | Rhiwbina Recreation Club |
| 2021-08-03 14:30:35Tuesday, August 3, 2021 | Penarth | 14:30:352:30 pm | Rhiwbina | Alliance | Penarth Bowling Club |
| 2021-08-04 18:00:32Wednesday, August 4, 2021 | Rhiwbina | 18:00:326:00 pm | Whitchurch Hospital | CMWL | Rhiwbina Recreation Club |
| 2021-08-07 14:30:30Saturday, August 7, 2021 | St. Joseph's | 14:30:302:30 pm | Rhiwbina | PG2 | St. Joseph's Bowls Club |
| 2021-08-07 14:30:40Saturday, August 7, 2021 | Rhiwbina | 14:30:402:30 pm | Cardiff | PG1 | Rhiwbina Recreation Club |
| 2021-08-10 14:30:38Tuesday, August 10, 2021 | Rhiwbina | 14:30:382:30 pm | Pontyclun | Alliance | Rhiwbina Recreation Club |
| 2021-08-11 18:00:39Wednesday, August 11, 2021 | Pentyrch | 18:00:396:00 pm | Rhiwbina | CMWL | Pentyrch Bowling Club |
| 2021-08-14 14:30:44Saturday, August 14, 2021 | Rhiwbina | 14:30:442:30 pm | St. Fagan's | PG2 | Rhiwbina Recreation Club |
| 2021-08-14 14:30:55Saturday, August 14, 2021 | St. Fagan's | 14:30:552:30 pm | Rhiwbina | PG1 | St. Fagan's Bowls Club |
| 2021-08-17 14:30:24Tuesday, August 17, 2021 | Whitchurch Hospital | 14:30:242:30 pm | Rhiwbina | Alliance | Whitchurch Hospital Bowls Club |
| 2021-08-18 18:00:56Wednesday, August 18, 2021 | Rhiwbina | 18:00:566:00 pm | Taff's Well | CMWL | Rhiwbina Recreation Club |
| 2021-08-21 14:30:08Saturday, August 21, 2021 | Beaufort | 14:30:082:30 pm | Rhiwbina | PG1 | Beaufort Bowls Club |
| 2021-08-21 14:30:57Saturday, August 21, 2021 | Rhiwbina | 14:30:572:30 pm | Barry Romilly | PG2 | Rhiwbina Recreation Club |
| 2021-08-24 14:30:30Tuesday, August 24, 2021 | Cardiff Athletic | 14:30:302:30 pm | Rhiwbina | Alliance | Cardiff Athletic Bowls Club |
| 2021-08-28 14:30:11Saturday, August 28, 2021 | Llanbradach | 14:30:112:30 pm | Rhiwbina | PG2 | Llanbradach Bowling Club |
| 2021-08-28 14:30:17Saturday, August 28, 2021 | Rhiwbina | 14:30:172:30 pm | Llanbradach | PG1 | Rhiwbina Recreation Club |
| 2021-08-31 14:30:25Tuesday, August 31, 2021 | Rhiwbina | 14:30:252:30 pm | Mackintosh | Alliance | Rhiwbina Recreation Club |
| 2021-09-04 14:30:18Saturday, September 4, 2021 | Rhiwbina | 14:30:182:30 pm | Ely Valley | PG2 | Rhiwbina Recreation Club |
| 2021-09-07 14:30:34Tuesday, September 7, 2021 | St. Joseph's | 14:30:342:30 pm | Rhiwbina | Alliance | St. Joseph's Bowls Club |
| 2021-09-11 14:30:44Saturday, September 11, 2021 | Barry Athletic | 14:30:442:30 pm | Rhiwbina | PG2 | Barry Athletic Bowls Club |
| 2021-09-11 14:30:50Saturday, September 11, 2021 | Rhiwbina | 14:30:502:30 pm | Barry Athletic | PG1 | Rhiwbina Recreation Club |
| 2021-09-14 14:30:03Tuesday, September 14, 2021 | Whitchurch | 14:30:032:30 pm | Rhiwbina | Alliance | Whitchurch Bowling Club |
| 2021-09-18 14:30:07Saturday, September 18, 2021 | Rhiwbina | 14:30:072:30 pm | Whitchurch Hospital | PG2 | Rhiwbina Recreation Club |