Since taking the Olympic title, the Mageralin swimmer has been lightly raced so is maybe lacking that competitive edge and Lin Zhang’s world record of 7:32.12, set in 2009 when body suits and fast times were all the rage, is still one of the toughest to chase down. "I was actually pretty disappointed with my swim," Wiffen told BBC Sport NI. "For me, the way I've been training, I was expecting quite a bit faster but if I look at the time itself it's the same as what I won the world championships two years ago. "It's actually a bit exciting, going that time after so little racing and so little training." Wiffen will look ahead to the 400m and then the finale on Wednesday when he goes in the 1500m freestyle. "The 400 free is newly added for me. I was in the world final last year in it but I didn't do it at the Olympics because it's not one of my main events but I'm building for LA [Games in 2028]. "I want it to become a main event for me and the world record was just broken yesterday.“ Nevertheless, whether it was his bold predictions or the fact that he is a national celebrity and sporting star after his exploits over the past couple of years, the public responded with the National Aquatics Centre filled to see him swim. "It's amazing to see this many people here, even when we had the European under-23s here it wasn't as packed as these championships. "I loved it, it's great to see all the crowd coming out to watch swimming - Ireland's best sport."