MADISON, Wis. -- Another week, another key injury for Wisconsins defense.The 11th-ranked Badgers have weathered the adversity just fine so far, but the loss of leading tackler Jack Cichy for the year may provide coach Paul Chrysts defense its toughest challenge yet.Teammates were understandably down as preparations began this week for Saturdays showdown against No. 7 Nebraska . They need to move on quickly, however difficult it may be, without the popular Cichy.Its going to take our whole defensive front seven to fill in for guys who go down like Jack, said linebacker Vince Biegel, who returned for Wisconsins 17-9 win over Iowa last week after missing two games with a foot injury.But the Badgers (5-2, 2-2 Big Ten) have become frustratingly used to having to replace key pieces on defense.Cichy is the second starting inside linebacker to be lost for the year, after Chris Orr got hurt in the season opener. Biegel missed the losses to Michigan and Ohio State.Third cornerback Natrell Jamerson has missed several games with a left leg injury. Backup outside linebacker Zack Baun missed the Iowa game with his own left leg injury. Space-eating nose tackle Olive Sagapolu (right arm) has already been ruled out for the Nebraska game, missing a second straight contest.Starting cornerback Derrick Tindal left the Iowa game with a right leg injury.Sometimes life throws you curveballs. Sometimes football is the same way, Biegel said.Yet there the Badgers remain near the top of key categories in the FBS:-Fourth in scoring defense (14.3 points per game)-Ninth in total defense (300.6 yards)-Tenth in rushing defense (102.9 yards)Theres talent and chemistry to it. I think theres a good scheme to it, Chryst said.First-year coordinator Justin Wilcox has successfully built on the scheme that former coordinator Dave Aranda established last season before leaving for LSU.At outside linebacker, formerly untested Garrett Dooley filled in well for Biegel. Ryan Connelly will take over for Cichy. The top sub at inside linebacker also filled in when Orr went down in the opener, before the Badgers got T.J. Edwards back from a season-opening injury.In a testament to the depth at linebacker, that unit remains one of the best in the Big Ten in spite of the injuries. T.J. Watt has emerged as a force on the outside with Biegel, while there shouldnt be much drop-off with Connelly joining Edwards inside.Theres a challenge that weve got to rise up to ... where weve been successful, but that doesnt guarantee anything going forward, Chryst said.Perhaps the Badgers will draw inspiration from the red T-shirts they started wearing the last few days with the phrase, Got grit? printed in across the chest.Said Chryst: Grit is something thats important. There (are) a lot of guys on this team that have it.Wisconsin prides itself on a blue-collar, grind-it-out mentality. The Badgers can go step-for-step against squads at Ohio State and Michigan filled with highly-rated recruits.Cichy himself emerged from walk-on status to becoming an energetic heart of the defense.Weve really got a bunch of guys who embody what Wisconsin is all about. 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Five days on the Olympic couch, and you are starting to feel as if youve hit the cobblestones in the cycling road-race and gone straight over the handlebars.Irregular sleep patterns, when you wake up, becoming disoriented and anxious over the fact that you are watching table tennis in the middle of the night, eventually sees you develop red dots all over your body. Then again, you think if such a blotchy look is good enough for 21 gold medal-winning Michael Phelps it must be good enough for you.But what keeps you going, endlessly flicking the channels and the App one more time in search of a sport that for four years youve completely forgotten about, is the rousing human interest stories -- involving those individuals with the common touch. The Australian Olympic team is providing plenty of those stories.Among the early Australian medal winners have been an exceptional female athlete who gave up being a motor mechanic to pursue Gold, another who admitted to devouring huge tubs of ice cream before events, and those who love showing a common national trait of being laconic.The first Australian medallists of the Games -- the archery mens team of Taylor Worth, Alec Potts and Ryan Tyack -- seemed a bit surprised by the attention when they were pursued by the media to explain how excited they were to win bronze.Television interviewers did their best to have them yahooing down the microphone, but they kept a lid on it. They had more events to compete in, so there was not yet any point big noting themselves -- especially as they were eager to win bigger prizes. They made the right comments, but there was no whooping or hollering.Then emerged the irresistible, beaming smile of Catherine Skinner after she had won gold in the womens trap shooting event. This was someone we could really relate to.Due to her persistence in wanting to be a successful shooter, her pursuit of a chemical engineering degree has takeen eight years.dddddddddddd She also had no qualms explaining that her diet was somewhat different to others at the Olympics. She has a serious sweet-tooth.In one radio interview after her gold medal success, she admitted to altering her routine while in Rio.I had to adapt a little bit because I did my personal best a few years ago after I ended up eating an entire pint of Ben & Jerrys the night before for dinner, Skinner said. So last night I had to sneak over to the McDonalds and get a big McFlurry.Skinners father, who encouraged her when she was 12 to try clay target shooting at their local bush club, was back on the family farm just out of Mansfield in the Victorian High Country. Daughter looked straight down the television camera to tell him: Hi Dad. I did it.Nice moment, as was the euphoria surrounding the Australian womens rugby sevens teams triumph. It was impossible not to be affected by their performances, or how their victory tantalised a nation.Heading the Australian team was Sharni Williams, who had been a motor mechanic in Canberra before deciding several years ago to focus on sevens football.Asked how it felt to win gold, Williams laughed: Heavy. Seriously, this gold medal is heavy.As touching was the haka performed by the New Zealand team after the final loss. Most of the players were in tears, but that did not deter them from completing one of the most stirring exhibitions of this traditional dancesAnd you just know the inspirational moments will continue over the next week or so at Rio.We now await how Australias oldest Olympian fares. Mary Hanna is 61, a grandmother, competing in her fifth Olympics in the equestrian dressage event.When asked what the Olympic experience meant to her, she replied: Its very addictive.Bit like being on that Olympic couch. ' ' '