Australia head coach Michael Cheika has made two changes to his starting line-up for Saturdays Rugby Championship game against Argentina at Twickenham. Lopeti Timani replaces the injured Sean McMahon in the back-row, beating Bath-based Leroy Houston for the Wallabies No 8 shirt.Houston may yet earn a Test debut via the bench, which has yet to be finalised. Rory Arnold of the Bumbies will start for Australia in the second row The towering Brumbies lock Rory Arnold will start in the second row alongside Adam Coleman, at the expense of Rob Simmons, in the only other change to the starting line-up from last weekends 18-10 loss to South Africa. Watch NOW TV Watch Sky Sports for just £6.99. No contract. In opting for the relative inexperience of Timani (one Test) and Arnold (four Tests), Cheika said the Wallabies could have no fear in backing young stars.We cant be frightened to do that. No matter what game it is, whether its Argentina or anyone else, he said. Highlights of the Rugby Championship clash between South Africa and Australia from Pretoria With the versatile Dean Mumm - a line-out specialist - making his home starting at blindside flanker, Cheika believes the Wallabies need a hard-runner at the back of the scrum in the mould of veteran Wycliff Palu.I think with the profile of the other players we have, like the sixes who are more the jumping-type sixes, that ball-carrying, Wycliff Palu-style No 8 is something that we want to have as well, Cheika said. Win the Rugby Trip of a Lifetime Enter a free prize draw when you buy tickets for Argentina v Australia at Twickenham We want to be able to do both. Leroy [Timani] is quite an abrasive runner as well, so theres a great opportunity to [see] how hell go with the step up.Arnold has impressed off the bench for Australia and earns the start ahead of Simmons, who suffering a head knock against the Springboks but has passed all concussion protocols. Speaking about picking Arnold, Cheika said: Hes just been aggressive, his lineout jumping has really improved, his mobility, ball carrying and every time hes come onto the field from the bench hes made an impact as a finisher.I just think its a real opportunity for him.Australia: 15 Israel Folau; 14 Dane Haylett-Petty, 13 Samu Kerevi, 12 Bernard Foley, 11 Reece Hodge; 10 Quade Cooper, 9 Will Genia; 1 Scott Sio, 2 Stephen Moore (c), 3 Sekope Kepu; 4 Rory Arnold, 5 Adam Coleman; 6 Dean Mumm, 7 Michael Hooper, 8 Lopeti Timani.Replacements (one to be omitted): 16 James Hanson, 17 Tom Robertson, 18 Alan Alaalatoa, 19 Kane Douglas, 20 Scott Fardy, 21 Leroy Houston, 22 Nick Phipps, 23 Tevita Kuridrani, 24 Sefa Naivalu.You can watch Englands tour of Bangladesh, plus Premier League football and the Japan Grand Prix on Sky Sports. Upgrade now and enjoy three months at half price! Also See: Rugby on Sky Follow @SkySportsRugby Pundits Fixtures and results Kyle Anderson Grizzlies Jersey . 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Instead, Nonis and Kessel were sorting through the fallout of a wild melee with the Buffalo Sabres, one that saw Kessel suspended for the duration of the pre-season. Marc Gasol Jersey . However, the 38-year-old is in no hurry to sign with another team. "Im not in a rush. This will be my last contract, so I want to do it right," said Burris on Thursday.TAMPA, Fla. - A scoreless night from star Steven Stamkos was no problem for the surging Tampa Bay Lightning.Cedric Paquette scored his first two NHL goals as the Lightning completed a four-game home sweep by beating the Calgary Flames 5-2 on Thursday night.Tampa Bay also got goals from Brian Boyle, Tyler Johnson and Valtteri Filppula. The Lightning had scored 15 goals during three wins earlier in the homestand against Arizona, Philadelphia and Washington.Its big if Stammers line is not going, somebody else is picking that up, Tampa Bay coach Jon Cooper said.Stamkos was held without a point, finished minus-1, and got both of his shots during a third period in which the centre played just five shifts.Jiri Hudler and Sean Monahan scored for the Flames, who had won three in a row. Mark Giordano had two assists.I felt that the effort was there, Calgary coach Bob Hartley said. I dont think that we looked like a bunch of fat cats out there. Its not a matter that they outworked us. They outsmarted us because we made some bad mistakes, but its a game of mistakes. No one does it on purpose, especially not in this organization.After Paquettes second goal at 61 seconds of the second period, Boyle put Tampa Bay up 3-1 at 4:02 on the rebound after Jonas Hiller stopped the forwards initial shot during a short-handed breakaway.Weve got it going pretty good up and down the lineup, Boyle said. We want to continue that..ddddddddddddMonahans power-play goal 20 seconds after Boyle scored cut the Calgary deficit to 3-2.Johnsons first goal in 12 games made it 4-2 at 40 seconds of the third. The centre had 13 assists over the previous nine games.Filppula added an empty-net goal with 2:10 to play.We were forcing things, especially after they got up, Giordano said. I think we were forcing more than we normally do.Paquette opened the scoring with his first NHL goal from in-close at 9:55 of the first.Its a great moment for me, Paquette said. I think I will remember it for the rest of my life.Hudler tied it at 1-1 when he beat Ben Bishop with 4:38 left in the period.Bishop stopped 29 shots, while Hiller made 28 saves.NOTES: NHL commissioner Gary Bettman attended the game and said the league is keeping our eye on Tampa for future events including the All-Star Game. We know this is a great place to host events, Bettman said. ... Bettman remains upbeat about the establishment of a hockey World Cup and said talks are continuing with the players association. ... Tampa Bay D Victor Hedman had the cast for a broken finger removed but could miss three to four more weeks. ... Calgary D Ladislav Smid was scratched because of an upper body injury but should play this weekend. ... Lightning C Alex Killorn sat out due to an upper body injury. ... Tampa Bay D Andrej Sustr returned after missing one game with a hand injury. ' ' '