AJ MacGinty set up an attempt and dismissed 16 focuses as Deal held from Leicester for a fifth progressive Prevalence win.
MacGinty opened four kicks and teed up Byron McGuigan, who completed neatly, to assemble a 16-3 half-time lead.
Tigers reacted astonishingly, adding to Zach Henry’s kick with a punishment attempt when Deal had two men in the wrongdoing container.
In any case, Marlon Yarde’s score after some constant pressing factor guaranteed Sharks climbed to second before Exeter’s down against Worcester on Saturday.
Leicester lead trainer Steve Borthwick rolled out intense improvements from their last match, with 12 players coming in after the success over Ulster last Friday which saw Tigers arrive at the European Test Cup last.
However, notwithstanding a lively second-half exertion, a youthful Tigers side couldn’t keep away from a fourth loss in five association matches and a 6th misfortune in succession against Deal in all rivalries.
Tigers couldn’t coordinate with the house side’s savage force before the break, with MacGinty rebuffing an absence of control as they attempted to repulse the early pressing factor.
MacGinty’s long kick put them ahead before the fly-half’s brilliant pass gave McGuigan sufficient room to move over the line.
Another MacGinty punishment brought a 16-0 benefit, which was decreased somewhat by Henry’s basic kick.
After another MacGinty punishment Tigers at that point making the most of their best spell, going through many stages to drive Sharks to fall foul of the official.
A yellow card for Jean-Luc du Preez for tenacious fouling was immediately trailed by one for a conscious Luke James thump on – which brought a punishment attempt.
Tigers couldn’t expand on the force, in any case, and Yarde wrapped up triumph with a short proximity score.
Deal Sharks: L James; McGuigan, S James, Slope, Yarde; MacGinty, De Klerk; Rodd, Van der Merwe, Oosthuizen, Wiese, Beaumont (capt), J-L du Preez, T Curry, D du Preez.
Official: Tom Foley.
Deal head of rugby Alex Sanderson: “I must appreciate that success. The battle, the assurance, the genuineness – the fellows are glad Leicester never crossed the whitewash.
Steve Borthwick rested a couple of central members yet the Leicester supervisor was as yet disappointed by the loss.
Leicester manager Steve Borthwick: “In that initial 15 or 20 minutes we gave them an over the top head start.
“There were openings yet we didn’t take them. Credit to Deal, I thought they shielded uncommonly well through that period [with 13 men].
“They’re a, great side and they uncovered us two or three zones, so we should be better.
“All I care about is the game we’re going to play, which was for this present week. I at that point consider the following and afterward I think about the week after that. I don’t focus on games, I needed to win.”