Following the final season of the National Youth Competition in 2017, the Jersey Flegg Cup returns in 2018 after a 10-year absence.
The draw for the NSWRL-run Under 20s competition has been released, with the nib Newcastle Knights set to play at McDonald Jones Stadium on five occasions.
12 clubs will field sides in the competition.
| Round 1 - March 10 | ||
| Newcastle Knights v Manly Sea Eagles | Cessnock Sportsground, 3pm | |
| Round 2 - March 17 | ||
| Newcastle Knights v Wests Tigers | Cessnock Sportsground, 3pm | |
| Round 3 - March 25 | ||
| Parramatta Eels v Newcastle Knights | Ringrose Park, 1pm | |
| Round 4 - March 31 | ||
| St George Illawarra Dragons v Newcastle Knights | Collegians Sporting Complex, 1pm | |
| Round 5 - April 7 | ||
| Newcastle Knights v North Sydney Bears | McDonald Jones Stadium, 3.30pm | |
| Round 6 - April 14 | ||
| Newcastle Knights v Cronulla Sharks | Cessnock Sportsground, 1.30pm | |
| Round 7 - April 21 | ||
| Wests Tigers v Newcastle Knights | Campbelltown Stadium, 1pm | |
| Round 8 - April 27 | ||
| North Sydney Bears v Newcastle Knights | North Sydney Oval, 5.45pm | |
| Round 9 - May 5 | ||
| BYE | ||
| Round 10 - May 12 | ||
| BYE | ||
| Round 11 - May 19 | ||
| Canterbury Bulldogs v Newcastle Knights | Belmore Sportsground, 3pm | |
| Round 12 - May 26 | ||
| Newcastle Knights v St George Illawarra Dragons | Cessnock Sportsground, 3pm | |
| Round 13 - June 2 | ||
| Mounties v Newcastle Knights | Aubrey Keech Reserve, 1pm | |
| Round 14 - June 9 | ||
| Newcastle Knights v Sydney Roosters | McDonald Jones Stadium, 1.30pm | |
| Round 15 - June 16 | ||
| Newcastle Knights v New Zealand Warriors | Cessnock Sportsground, 3pm | |
| Round 16 - June 30 | ||
| BYE | ||
| Round 17 - July 7 | ||
| Cronulla Sharks v Newcastle Knights | Henson Park, 1pm | |
| Round 18 - July 13 | ||
| Newcastle Knights v Canterbury Bulldogs | McDonald Jones Stadium, 5.45pm | |
| Round 19 - July 21 | ||
| Newcastle Knights v Penrith Panthers | McDonald Jones Stadium, 11am | |
| Round 20 - July 28 | ||
| Newcastle Knights v Parramatta Eels | Cessnock Sportsground, 1.30pm | |
| Round 21 - August 3 | ||
| Newcastle Knights v Mounties | McDonald Jones Stadium, 3.55pm | |
| Round 22 - August 11 | ||
| New Zealand Warriors v Newcastle Knights | Mt Smart Stadium, 1pm | |
| Round 23 - August 18 | ||
| Penrith Panthers v Newcastle Knights | Panthers Stadium, 10.45am | |
| Round 24 - August 25 | ||
| BYE | ||
