Coming to the crease with Lansdowne still needing some 60 runs to overhaul Red Star's paltry first innings total of 123 and four wickets down, including that of danger man Henry Cameron, brilliantly caught by Harry Clinton-Baker, Jefferies had only one thought in mind.
"We badly needed to get some momentum going and you were never going to do that by just picking ones and twos - the loose balls had to go to the boundary," he said. "And with a bit of luck and a quick outfield things worked out OK."
The Jefferies knock and a much more sedate but valuable 34 from James Adamson saw Lansdowne through to 256, a first innings lead of 133.
Red Star skipper Joe Hull was not about to lay the sole blame for his team's disappointing batting effort in their first innings on the state of the wicket.
"Yes, we would have bowled had we won the toss and, yes, the pitch did have a few tricks but we knew it was going to be difficult and didn't apply ourselves well enough," he said.
Only five of the Red Star batsmen lasted more than 20 balls and just two players got into the 20s on the scorecard, opener Harry Clinton-Baker (20) and Peter Sigvertsen (22 not out).
Spearheading the Lansdowne attack was Calvin Ball, who made the most of the conditions in taking 5-46 from his 14 overs while Jock Cameron took 2-39 off nine overs and Jefferies 2 -23 off six overs.
Red Star did fare better when their second innings got under way, getting through to 40-0 by stumps, and the chance to push for an outright win.