Four second-half tries saw S&L take the honours in this county derby and so maintain their play-off hopes in Midlands Three East (South).
S&L dominated for long periods of the match but twice found themselves 14 points behind after being guilty of some slack play.
But when they found their form, they produced some fine rugby and coach Gary Seymour was a happy man afterwards.
“I was absolutely delighted with the performance of the lads,” he said.
“Despite shooting ourselves in the foot a couple of times when we went behind we played some good stuff and showed great character in coming from behind twice in the match.”
The game began badly for S&L as Daventry took possession from the kick-off and drove forward before spreading play wide to score a converted try.
Things then got worse for the hosts as, with S&L pressing the Daventry line, the ball was intercepted by the visiting centre who ran in from 75 metres to score another converted try.
Despite the setback, S&L continued to play good rugby and finally got on the board through a Chris Jones drop-goal.
Jones was on target again soon after with a penalty but Daventry quickly cancelled that out with one of their own.
But, on the stroke of the half-time break, S&L finally got reward for some good pressure when Ash Church went in for a try, Jones’ conversion making it 17-13 at half-time.
However, history repeated itself at the start of the second half as Daventry again scored straight from the kick-off.
The conversion was missed but a penalty soon after had the visitors leading by 14 again at 27-13.
That was the wake-up call S&L needed and their revival was led by scrum-half Matt Fleming.
From a series of rucks, he went in for a classic sniper’s try and then produced a superb 30-metre run, during which he beat four players, to score again.
Jones converted both to level the match and from then on, S&L took control.
Dominant work by the pack earned them a penalty try as Daventry failed to cope with the pressure at a scrum.
Jones added the conversion and the home side then wrapped things up when Ellis Bowman rounded off another fine move.
Meanwhile, S&L 2nd lost 40-5 to Daventry 2nd, Grant Hussein with the S&L try.