With day quickly turning into night and a risk of lightning, the umpires had no hesitation in taking the players off with 47 overs still to be completed.
When the players traipsed off the Oval, the Knights were 148 for one with Elgar on 72 and Rossouw on four.
The good "strip" played reliably, save for the occasional delivery that kept low and runs were easy to come by with 80% of the runs prior to the luncheon interval scored via the boundary.
In the post-lunch session, both Hendricks and Elgar continued to impress with their half-centuries coming up off 108-balls. Both batsmen found the ropes on 10 occasions.
Neither batsman looked to be in any trouble, so it came as a surprise when Hendricks misread a Zander de Bruyn delivery and was trapped in front.
The batsman's three hour sojourn at the crease had yielded 65 runs and included 12 boundaries.
Rilee Rossouw hardly had time to trouble the scorers before a confident appeal went up from the fielders for caught behind, however the umpire's finger stayed down.
With the skies beginning to look ominous, the officials took the players off the field 45 minutes before the scheduled tea break.