JACKSONVILLE, Fla. -- The Jacksonville Jaguars have a recurring theme in their eight-game losing streak. And its not poor play from quarterback Blake Bortles.The Jaguars (2-11) have had at least one major meltdown on special teams in each of those losses, the kind of gaffes that significantly reduce the teams already-ultra-thin margin for error.Muffed punts, poor coverage and silly penalties are just a few of the problems coach Gus Bradley has seen from his not-so-special units over the last two months. The Jaguars, who play at Houston next, seemingly reached a low point in a 25-16 loss to Minnesota on Sunday.Jacksonville allowed a 53-yard kickoff return, had a punt blocked, was flagged for roughing the kicker, missed one field goal and had a 61-yarder blocked. And maybe the strangest moment of the afternoon: Place-kicker Jason Myers was penalized for delay of game after the Jaguars decided to switch from a deep kick to a squib kick. Those blunders essentially cost the Jaguars at least six points in a close game.It wasnt up to our par, Bradley said Monday. When you take a look at it, there were mistakes by units throughout the whole day.Most of the season, too.Heres a look at the mounting miscues on special teams:-Week 13 against Denver: Alex Ellis was flagged for unnecessary roughness on a punt return in the final minute of the first half. His 15-yard penalty set up a field goal that put the Broncos ahead 10-3.-Week 12 at Buffalo: Rashad Greene muffed two punts, but recovered both. Jacksonville also gave up a 43-yard punt that the Bills turned into a touchdown. Buffalo missed the extra point.-Week 11 at Detroit: Andre Roberts returned a punt 55 yards for a touchdown against the Jaguars. Greene also muffed a punt, but Jacksonville recovered.-Week 10 against Houston: The Jaguars gave up a 57-yard punt return to the 7-yard line. The Texans scored a touchdown on the next play.-Week 9 at Kansas City: Bryan Walters fumbled a punt and the Chiefs recovered at the Jaguars 23. Two plays later, they scored a touchdown.-Week 8 at Tennessee: Marqise Lee muffed a punt, the Titans recovered in Jacksonville territory and kicked a field goal.-Week 7 against Oakland: Greene muffed a punt, the Raiders recovered in the red zone and settled for short field goal.Thats 42 points that Jacksonvilles special teams have either directly or indirectly allowed over the last eight games. Its more than half the combined point differential (71) in those losses.You look in the past, a couple of years ago, we were very good in our coverage units, very good, Bradley said. You always have to try and stay ahead of the game. You look at areas like that. We have some new players in there and trying to position where they are best.In previous years, the Jaguars made room for special teams aces on the roster, and players like Montell Owens and Kassim Osgood made the Pro Bowl as niche performers. But Bradley and general manager Dave Caldwell choose to try to develop somebody into that role, Bradley said.It didnt pan out. The bottom half of the roster has yet to produce any big-time special-teams players. And guys drafted in middle rounds to fill those roles -- Ace Sanders, Denard Robinson, Greene and others -- have come up short.And, now, its showing on the field.I just thought in the second half, especially, the errors that we made were uncharacteristic of us, Bradley said. 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Still, Brewers manager Ron Roenicke thought taking him out before the fifth inning was an unusual move. "Im looking up at the board and hes got two hits given up and one run, and Im taking him out after the fourth inning," Roenicke said.Andy Murray faces Kei Nishikori in his second ATP World Tour Finals match at the O2 Arena in London on Wednesday afternoon.The pair are joint-top of the John McEnroe group after making near-perfect starts to the tournament on Monday.Nishikori comprehensively outplayed Stan Wawrinka in a 6-2 6-3 triumph, while Murray brushed aside Marin Cilic in a similarly emphatic 6-3 6-2 victory. Live Tennis: ATP World Tour Finals November 16, 2016, 12:00pm Live on Get Sky Sports Get a Sky Sports pass Murray goes into the game looking for his 21st victory in a row, while Nishikori is battling for rankings points in his bid to end the year as world No 3.Murray has won seven of the pairs nine meetings to date, although Nishikori prevailed in five sets in their last match, in Septembers US Open quarter-final. John McEnroe Group Won-Lost Sets Games Kei Nishikori 1-0 2-0 12-5 Andy Murray 1-0 2-0 12-5 Stan Wawrinka 0-1 0-2 5-12 Marin Cilic 0-1 0-2 5-12 Murray struggled to gauge the speed of the ball in the opening games of his win over Cilic on Monday, but he found his range later in the match and should now be fully acclimatised to the court.Nishikori had no such trouble against Wawrinka and appears perfectly suited to the O2.ddddddddddddMurray said of Nishikori: I would say this is probably his best year that he has had on the tour. He is one of the best players in the world. He has been playing very well the last few months especially.Murray and Nishikori will be on court after 2pm. Fleming/McEnroe Group Won-Lost Sets Games R Klaasen/R Ram 1-0 2-0 13-9 H Kontinen/J Peers 1-0 2-0 13-9 P Herbert/N Mahut 0-1 0-2 9-13 F Lopez/M Lopez 0-1 0-2 9-13 The first match of Wednesdays afternoon session sees Henri Kontinen and John Peers take on Raven Klaasen and Rajeev Ram in the Fleming/McEnroe Group of the doubles competition.Both pairs won their opening matches of the tournament in straight sets.They have faced each other twice before, with Kontinen and Peers winning both times.Watch every day of the ATP World Tour Finals, from November 13-20, live on Sky Sports. Full schedule here. Six months half price Upgrade to Sky Sports to watch Man Utd v Arsenal on Saturday and get the first six months half priceAlso See:Thiem beats Monfils in LondonMurrays service syndrome over?Murray wins on debut as No 1We will get the dream final ' ' '