The Robins led 34-0 at the break, running in six tries to build the platform for victory. Eight different players contributed scores over the course of the match, with captain Michael Dobson crossing first, while he also added six goals. The fast start gave Sandercock's side their first win of the Super League season at the third time of asking and delighted the 42-year-old.
"I was very happy with the first 40 minutes," Sandercock said. "We controlled the game and scored some very nice tries. It all goes back to possession. When you defend set after set like we did in the first two games it's awfully hard to defend. This time we had more of the ball and that gave us more energy. People saw the result of that."
Sandercock hopes the two points gained from this win will kickstart his side's season after losing their first two games to Catalan Dragons and Wakefield.
"It gives us two points," he said. "We are always confident in our ability. If you look at the first two games in great detail, we had chances to win both games. We need to back this up next week against Salford."
Widnes coach Denis Betts was disappointed his side were blown away in the first half. Betts said: "Conceding 40 points is not good enough for this team anymore. We started the season well.I thought we could come in to this game and win."
Last season's wooden spoonists added some respectability with second-half scores from Gareth Hock, Rhys Hanbury and Alex Gerrard, but they gave themselves too big a mountain to climb. Betts added: "Coming out and responding in the second half was something we wouldn't have done last season.
"The score looks like we got a flogging, but I'm disappointing with the scoreline and we have to be better. It was an arm wrestle and we broke first. They got their enthusiasm from the crowd. They scored 10 points quickly from us throwing the ball on the floor.
"We compounded errors by not sticking to the processes we spoke about in the week like working hard and getting to our kicks. We couldn't get back into the game but we made errors defensively.
"We reverted back to what we were doing at the start of last season and they got on a roll. The scoring system will do that to you and you're behind by 18 or 24 points in no time. It was hard to break that cycle. We came out in the second half and played a lot better. Whether Hull KR eased off I don't know. We won the second half 18-12 and looked a lot more like ourselves."
- Sports & Recreation