With England 200-7 at Old Trafford, leading by 336 and in the 63rd over of the day, Ali opened up and launched a huge drive over the top of bowler Keshav Maharaj towards the pavilion. Getting mocked by his captain Joe Root, as his Yorkshire and England team-mate mocked his celebratory wave to the crowd.
He's done a great job with England on two occasions, b ut at the moment Russell Domingo is head coach of South Africa and doing a brilliant job. He picked up the wicket of Dean Elgar for a duck before lunch, trapping the South African opener lbw with just his third delivery.
England sensed series victory, and got over the disappointment of Jonny Bairstow being dismissed for 99, as James Anderson ripped through South Africa's first innings with 4-33 on Day 2 of the fourth and final test on Saturday.
Despite being set for a morale-boosting Test victory over South Africa, selectors will be anxious about the batting line-up with just three Tests against a depleted West Indies to come before they travel to Australia for the biggest Test series of them all against Australia.
With Russell Domingo's current deal to lead the Proteas running out at the end of the current series against England, the highly-regarded Gibson has emerged as the front-runner to take over.
The all-rounder - who starred with the ball to finish off the third Test with a hat-trick - smashed an unbeaten 67 from 59 balls including three sixes as England closed day three 360 ahead on 224-8.
Moeen went on the counter - going to fifty with his second six off the spinner, which he sent onto the England balcony where it was caught by a smiling Bairstow.
With his Test place thought to be on the line, Jennings did not last much longer though as he edged Kagiso Rabada to slip to depart for 18, while Dawid Malan followed soon after when he was caught bat and pad off the bowling of Keshav Maharaj. At stumps on Day 2 of the fourth Test, South Africa were 220 for 9.
Anderson certainly enjoyed the chance to bowl from the newly-named "James Anderson End" at his home ground - with all of his wickets coming from there.
England lost yet another wicket before tea - that of Stokes.