Marco Fu Ka-chun, one of the SAR's highest earning athletes, has topped up his bank account to the tune of another GBP9,800 in prizemoney despite making an early exit from the UK Championships. Fu suffered a 9-7 defeat at the hands of world champion Ronnie O'Sullivan in the last 16 of the tournament in York, England. Fu, competing in his fifth season since breaking into the professional ranks in 1998, has already accumulated more than GBP320,000 in career prizemoney. Despite a shoddy start to the season, Fu looked like he might be able to shake off his poor form as he advanced to the last 16 for the first time this season. 'I'm happy with the way I've played this week and I'm hitting the ball a lot better. I want to stress the positives because I'm a lot happier with my game,' said Fu, who edged Australian Quinten Hann in a last-32 clash last week. 'I didn't play well in the first session. I had chances to make it 4-4 or even go 5-3 ahead, but I didn't take them so that left me with a mountain to climb. 'I played better today, but you can't expect to come back from 8-5 down against Ronnie.' Defending champion O'Sullivan admitted he struggled against Fu. 'I'm playing all right, but I have had to rely on my opponent helping me out in my two matches so far. I'm not thinking of getting to the final,' said O'Sullivan, who will face Scotland's Drew Henry in the quarter-finals. 'Unless something drastic happens in the next 48 hours I could be out. I need to find some inspiration from somewhere.' Fu, 24, has seen his world ranking drop to 31st from a career high of 15th.