Cronulla Sharks forward Andrew Fifita's success inspires twin brother David Matt Russell and Laurie Daley preview North Queensland's clash with Cronulla. Cronulla Sharks teammates and twins Andrew (below) and David Fifita. Source: The Sunday Telegraph THEY finish each other's sentences like an old married couple. They share the same laugh that echoes into a cackle. They walk the same, right down to that right-foot, which is ever so slightly pigeon-toed. And they speak with such similar haste that not even their girlfriends can translate which of the brothers said what. But drawing comparisons between identical twins, Andrew and David Fifita, is something the brothers will never agree on. "I'm the boss," says Andrew, who is the elder twin by 10 minutes. It goes on size, so I'm top dog," David interrupts. Whose the fastest? "I am, I'll race Dave right now," Andrew claims, as he points to a strip of asphalt. "Please, I'll beat you, especially over the longer distance," David, who was a former cross country champion, snaps back. Every rugby league supporter knows the Andrew Fifita story. Unwanted by the Wests Tigers, given a second chance at the Cronulla Sharks, the NSW Origin prop has proven the most consistent Blues forward throughout the current series. But if David Fifita embraces his own second coming in the NRL, he may just end up proving who really is the top dog. Ignoring the security of a two-year deal under Storm coach Craig Bellamy in Melbourne, David has returned from 10 months playing league in France to join his twin brother at Cronulla for a contract that extends to no more than the remaining 10 games of this season. The deal is simple: reach your potential to earn a new deal or see you later. And that's exactly the way David likes it. I knew if I had that second year locked in already, I might not have been as focused. This will drive me," said David, who will commence his NRL quest in NSW Cup next week. It's my last chance. It's taken me years to realise if I'm good enough, I have to take it to the next level. A precocious talent, who possessed a wicked fend either at centre or back-row, David overshadowed his twin brother when they last played together in under-20s for the Wests Tigers in 2009. "I always rated David better than me," Andrew said. I got to this position today because of the way he attacked. My fend that I use now, I learnt that off my brother. He was that much more dominant than me growing up. I was in the shadow of David. I never thought I would go past him. Cronulla Sharks teammates and twins Andrew (left) and David Fifita. But physical prowess is only half the story. Hard work, dedication and attitude is where it all came unstuck for David. It comes down to an off-field thing. It's mental, it's doing those extras. Those little one per-centers off the field are what counts," Andrew said. I stuck to those rituals that first-graders do, like coming to training on days off, but coming through the grades David didn't want a bar of it. Now he's back, he's ready to go and do that hard work. David claims his brother's remarkable rise to Origin level has proven an inspiration. "Before going to France I had everyone telling me, 'You should be there, you should be there' of which I just kept ignoring and not taking serious," David said. But the big eye-opener was when he got the call-up for Origin. It made me realise how much he's done, how young he is. At one stage we were together and I went off the track and he stayed on the track. Now that he's done it. It's just pushing me to be there with him.