Hull KR scored 40 unanswered second-half points to claim a remarkable 50-20 comeback win over Catalans Dragons and climb off the bottom of the Super League table . Rovers looked set for another defeat as they trailed 20-4 during the first half but they staged an unbelievable rally to take the spoils as Catalans were blown away after half-time . Slick passing and determined defending kept the French side out as Chris Chester 's men , who ran in nine tries - seven after the interval , enjoyed their best day of the season so far . Ken Sio celebrates after scoring in a game where he grabbed a hat-trick for Hull KR at home to Catalans . It had all looked so different when Willie Tonga put the Dragons ahead early on . Ken Sio led the way with a hat-trick of tries while Ben Cockayne and debutant Shaun Lunt notched braces . Albert Kelly and Liam Salter were also on the scoresheet for the hosts , with Josh Mantellato slotting over seven conversions . Catalans ran in four tries , but all of them came during the first half as they could find no way through in a one-sided second period . Few would have predicted the final scoreline as the Dragons opened the scoring just two minutes in through Willie Tonga . Rovers responded with a try from Sio in the 16th minute but the Dragons restored their lead when Michael Oldfield scored the third unconverted of the half in the 25th minute - two minutes after KR prop Mitch Allgood was sin-binned for his part in an off-the-ball flare-up with Scott Dureau . Albert Kelly breaks between two Catalans players on the way to a superb individual score . The Dragons capitalised on their numerical advantage when Remi Casty stretched over the line to score in the 28th minute before Eloi Pelissier further increased their lead . Dureau converted both tried to put the visitors 20-4 ahead with five minutes of the first half remaining . At that point it looked as though there was only one outcome to the match , but Rovers had other ideas . They gave themselves a timely boost when Cockayne scored on the stroke of half-time after great work by Kris Welham , allowing the hosts to reduce the deficit to 20-10 at the break thanks to Mantellato 's conversion . Catalans would still have been in optimistic mood at the midway point of the match , but that would not have lasted long as KR staged an incredible second-half onslaught . Liam Salter breaks away from Morgan Escare to score as Hull KR ran in seven second-half tries . Albert Kelly added to his try collection with a superb 40 metres try converted by Mantellato , who four minutes later added the extras to Sio 's second try of the game to give Rovers the lead for the first time at 22-20 . Rovers never looked back as the tries continued to flow , with Sio completing his hat-trick in the 57th minute . Newcomer Lunt then got in on the scoring with his first Rovers try in the 59th minute following up good work by Terry Campese . Salter was next over as Rovers continued to run riot before Lunt got his second . Cockayne also doubled up with his second try of the afternoon in the 75th minute with Mantellato converting to seal a breathtaking win . Shuan Lunt celebrates with Terry Campese after his second try on his debut .
Hull KR came back from 20-4 down to score half unanswered points . Seven of Rovers ' nine tries came in superb second 46 . Ken Sio bags a hat-trick while Albert Kelly scores brilliant solo try . Hull KR 's second win of the season lifts them to eighth in Super League .