In a nutshell: Uz-mania hits the Adelaide Oval

The scorecard: South Africa 9-259 dec trail Australia 6-307 (Khawaja 138no, Abbott 3-38) by 48 runs.

The day in a tweet: Khawaja bats through the day for Test ton No.5 as Australia take slender lead into day three

The century: Ten minutes before dinner Usman Khawaja did what no Australian has managed in this series – score a Test match century. After fighting through 12 tricky overs last night and a superb spell of seam bowling by Kyle Abbott in the afternoon session, Khawaja powered to his fifth Test match ton from 197 balls. At one point the elegant left-hander was on eight from 59 balls, but from there runs flowed, the strike was regularly rotated and the boundary met. Khawaja took particular liking to debutant spinner Tabraiz Shamsi, taking 46 runs and five boundaries from the 81 balls he faced from the left-arm wrist-spinner. Not content with settling for just three-figures, the 29-year-old made it through the second new ball as he clocked up a an entire day's worth of crease time. It's perhaps no surprise that the Adelaide Oval would be the place Khawaja would score big. In his past six first-class knocks at the venue he's produced scores of 214, 24, 101, 19, 26 and 138no. It was almost a faultless innings if not for a dreaded mix up with his captain Steve Smith.

The mix up: Khawaja and Smith were doing it easy when disaster struck. The pair had added 137 for the third wicket before Smith squirted Shamsi to point, took off, stuttered, kept going, stopped, was sent back and ultimately run out. It was with silent frustration that Smith left the field on 59, holding his bat mid-blade, the promise of a century vanished. If the skipper doesn't produce a century in the second innings it will be the first time since Australia's tour of the UAE to face Pakistan in October 2014 that Smith hasn't scored reached triple-figures at least once in a Test series.

The bobble: It took less than four overs for the first wicket, and controversy, on day two. Debutant Matt Renshaw had survived 12 rigorous overs the previous evening, but in the brilliant Adelaide sunshine the opener could only add two more runs before he was out to Kyle Abbott, wonderfully caught at third slip by Dean Elgar. But as the Proteas celebrated and Renshaw realised that his first Test innings was over, the umpires came together and asked the batsman to stay put and the third umpire look at the catch. Elgar had bent low and to his left to take the catch in front of second slip just centimetres off the ground. However, replays showed a bobble, with the ball transferring from right hand to left perilously close to the turf before the catch was firmly under control. It took several looks from various angles, but finally third umpire Aleem Dar confirmed it was a clean catch and sent Renshaw on his way.

The drop: On 46, Smith was given a life when Hashim Amla dropped a sharp chance at first slip from the bowling of casual spinner JP Duminy. Smith flashed hard a half-volley that opted not spin, instead sliding on through to take the toe of Smith's bat through to Amla. According to the Wide World of Sports stopwatch, Amla had just 0.383 of a second to react and snatch the catch, and while he got a good part of it, the ball bobbed up and couldn't be caught on the second attempt.

The shot (in the air): Amid a torrid spell by the Proteas paceman, and having faced just a dozen deliveries, Smith broke the shackles with a tremendous hook shot for six over deep square leg for six off South Africa's fastest bowler, Kagiso Rabada.

The shot (along the ground): How about these from Peter Handcomb. In three consecutive deliveries the rookie right-hander sent Philander to the rope, firstly thought cover, then forward of point before a powerful pull shot split mid-wicket and mid-on. It brought up the youngsters maiden Test half-century and gave Australia the lead.

The maiden fifty: Handscomb looked organised, competent and composed. Playing deep in his crease to the point where hit wicket appeared the most likely mode of dismissal, Handscomb handled the three-prong pace attack with ease and the Proteas spinners even easier. The second new ball was the accelerant for his innings. First it brought the aforementioned hat-trick of boundaries but then his downfall. Again playing back when he perhaps should have been playing forward, the 25-year-old missed a full-ish ball from Abbott that jagged back and cannoned into middle stump. The end of his first, but certainly not last, Test match innings for Australia.

The seed and the spray: Nic Maddinson had faced 11 balls without scoring a run in his first innings for his country. Then on ball 12 he gets a peach of a cherry from Rabada. I mean, this ball was terrific. It was fast, yorker-length, a hint of movement in the air and a lot off the deck to get past Maddinson's nervous prod and uproot middle stump. It's the kind of ball you dread in your maiden Test match knock. And to rub salt into the wounds, the bowler gave the batsman a send-off!

The wash-up: It's game on in Adelaide. Australia's 48-run lead might not seem like much, but it's already almost 20 per cent of South Africa's first innings total. If the hosts' lead can swell to around 80 or – dare we say it, 100 – then it's going to be very tough work for the visitors. The pitch couldn't be better. The odd ball has stayed down, sure, but overall it's offered assistance to the seamers all day and even gripped for the wrist-spinner late in the evening. So bat as long as possible for the Aussies, while the Proteas will want three quick wickets on day three and then a long time at the crease.

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