Ben Barba crossed for his 21st and 22nd tries of the season – whilst Mark Percival and Ryan Morgan also scored in the victory.James Roby tallied a special milestone four-pointer too as he took his total in the Red Vee to 100.Saints dominated in terms of chances and possession and deservedly led 18-0 at half time.Holbrook’s men got their night underway within the first minute as they punished the Robins for putting the kick-off dead.After Theo Fages had probed on the left hand side, the ball came right and Ben Barba found Ryan Morgan for his 11th of the season.Eight minutes later James Roby spotted a gap and went over from dummy half – his 100th try in the Red Vee.Fages then almost unlocked Barba with a deft chip before Luke Thompson had one chalked off for a knock on in the build up.Saints continued to knock on the door but it took until the 27th minute for them to score again.And it came via the hands of Fages and Zeb Taia who combined perfectly to turn it inside to Barba for his 21st of the season.Saints continued to press and could have have been further ahead at half time – but they couldn’t find the killer touch to take the game away from their opponents.And early in the second, Hull KR reduced the deficit.It was a great try too; the ball going through at least 20 pairs of hands, left to right and back again, before Junior Vaivai collected his own kick.Saints restored their advantage with a touch of class.Dom Peyroux burst through and went 30 metres before turning it inside to Danny Richardson.The young half back then, at full tilt, left footed it over Percival who touched down.Barba went close twice in quick succession and then Roby was unlucky not to tally his brace.But the game stuttered somewhat to a close as both sides turned the ball over on numerous occasions.However, the best was saved until last once again as Percival collected a kick on his own line as the hooter sounded and sent Barba the distance.Match Summary:Saints: Tries: Morgan, Roby, Barba (2), Percival Goals: Richardson (3 from 5)Hull KR: Tries: Vaivai Goals: Shaw (0 from 1)Penalties Awarded: Saints: 11 Hull KR: 7HT: 18-0 FT: 26-4REF: Gareth HewerATT: 9,405Teams:Saints: 23. Ben Barba; 2. Tommy Makinson, 3. Ryan Morgan, 4. Mark Percival, 19. Regan Grace; 6. Theo Fages, 18. Danny Richardson; 10. Kyle Amor, 9. James Roby, 16. Luke Thompson, 17. Dom Peyroux, 11. Zeb Taia, 13. Louie McCarthy-Scarsbrook, Subs: 7. Matty Smith, 14. Luke Douglas, 15. Morgan Knowles, 20. Matty Lees.Hull KR: 1. Adam Quinlan; 5. Ryan Shaw, 22. Liam Salter, 2. Junior Vaivai, 37. Elliot Wallis; 20. Matty Marsh, 11. Maurice Blair; 23. Joshua Johnson, 30. Joe Cator, 12. James Greenwood, 17. Chris Clarkson, 34. Danny Tickle, 15. James Donaldson. Subs: 8. Nick Scruton, 10. Mose Masoe, 13. Ben Kavanagh, 24. Chris Atkin.