Mark du Plessis' strong resurgence continued yesterday, but the jockey revealed he has already decided not to return for next season due to family reasons. 'Purely because it is too hard here without my kids,' said Du Plessis after landing the Jockey Challenge by about the margin his final mount Blue Sky missed providing him with a double on the day at Sha Tin. 'They live with their mother in New Zealand and I speak to them every day but it is really making me homesick, so I'll be going back to New Zealand to ride next season.' After a quiet period, Du Plessis (pictured) has been back in the winners lately and was able to grab the Challenge on a foundation of consistency after landing just the lone win aboard the John Size-trained Fast Winner, part of a double for the reigning champion trainer. 'I was actually a bit surprised that Douglas Whyte didn't want to ride him but when John asked if I'd stay on him I jumped at it and I was sure he was my best ride for the day,' Du Plessis said. 'He had everything he needed today - a good draw so he could find the rail and not hang in and the one-eyed blinker just to make sure. 'He won well enough but he has got a few tricks and it might have been a bit flattering to him,' he added. It was a Class Five double for Size, who had won the 1,800m event for the cellar dwellers earlier with Octagonal Canyon (Whyte), who has had plenty of hard luck stories since his win at Happy Valley earlier in the season, but would have had nowhere to hide if he had been beaten yesterday. 'He had a dream run this time,' said Whyte, who admitted to being a touch disappointed with Octagonal Canyon's previous effort over 2,200 metres at Happy Valley. 'But John's freshened him up, brought him back to the 1,800 metres and things could not have gone better for him the race. I still believe that when he produces the way he did today, he is better than Class Five, so I'm not selling him short next time in a higher grade.' It was a day that promised much for Whyte, but ended badly, with highly promising sprinter Tuscan Spirit being eased out of the Sprint Cup with a heart irregularity at the top of the straight and the jockey later attracting a two-day riding ban and HK$40,000 fine for his performance on Jamesina in the Queen Mother Memorial Cup.