With 24 bookings in two-and-a-bit seasons, moody Chelsea striker Diego Costa is used to living on the edge in English football.And nowhere is his brittle temperament seemingly put to the test more than in matches against Liverpool.A stamp on Emre Can that earned Costa a retrospective three-match ban. The numerous bust-ups with Martin Skrtel. The forehead-on-forehead confrontation with Steven Gerrard. It doesnt take much to rile Costa but theres something about Liverpool that really fires up the often-pilloried Spain international.So expect plenty of scrutiny on Costa when the two teams meet in the latest Friday-night fixture in the English Premier League, which is the highlight of the fifth round of games.The debate is on regarding Costa: Will he finish the season with more goals than yellow cards? Its a close-run thing at the moment.He is back to his best in front of goal, netting four goals in four games in Chelseas unbeaten start to the league campaign that has seen the team earn 10 points from a possible 12. In the 2-2 draw against Swansea on Sunday, Costa scored both of Chelseas goals and was almost impossible to keep down.Costa is also keeping match officials busy by getting three yellow cards, and ran the risk of seeing those turn into red with a studs-first challenge against West Ham and by throwing himself theatrically to the ground against Watford and Swansea.Costa, put simply, is never far from a flashpoint.If you are in a friendly-game mood then you have no chance, Liverpool manager Juergen Klopp said of Costa. He is a real warrior on the pitch.Theres rarely a news conference with Chelsea manager Antonio Conte that doesnt involve a line of questioning on Costa. Conte says the striker is targeted -- and it is easy to see why given Costas inability to resist reacting to goading by opposition players.Diego is growing in these situations -- in the last game he showed great attitude, Conte said Thursday. He is passionate but I?want him to put his passion into the football in the right way.Its one of the many subplots in what could be a thrilling game under the Stamford Bridge lights, considering the start to the season made by Chelsea and Liverpool.Liverpool has scored four goals in each of its wins over both Arsenal and Leicester, and also gained a point from a draw at Tottenham. Aside from a disappointing 2-0 loss at Burnley, Klopps side has been impressive -- especially the fluid forward line of Philippe Coutinho, Roberto Firmino and new signing Sadio Mane.Only Manchester City, which has won all four of its games, has more points than Chelsea so far this season.And if Costa shows passion on the field, Klopp and Conte are possibly the most animated Premier League coaches on the touchline. Like in last weekends Manchester derby when Pep Guardiola and Jose Mourinho went head to head, there could be as much focus on the coaches technical area as on the field at Stamford Bridge.Here are some other things to watch out for this weekend:---LUIZ STARTSDavid Luiz will make his first appearance in his second spell at Chelsea after Conte confirmed Thursday that the Brazilian will replace injured John Terry at center back.Terry hurt his ankle against Swansea and was ruled out for 10 days.Luiz was signed from Paris Saint-Germain for a reported 32 million pounds ($42 million) on the final day of the transfer window, about 20 million pounds less than Chelsea sold him to PSG for in 2014.---CITYS RUNMan City puts its winning start to the season on the line at home to Bournemouth, having taken its run of successive victories to seven by beating Borussia Moenchengladbach 4-0 in the Champions League on Wednesday.Pep Guardiola still hasnt tasted defeat as City manager.After his hat trick against Moenchengladbach, Sergio Aguero drops out of the team for Saturdays match. He is serving the second match of a three-game domestic suspension for elbowing an opponent.---OTHER GAMESManchester United manager Jose Mourinho will hope a Europa League match at Feyenoord on Thursday doesnt take too much out of the team for a Premier League match at Watford on Sunday.Also Sunday, its: Tottenham vs. Sunderland; Crystal Palace vs. Stoke; and Southampton vs. Swansea.On Saturday, its: Hull vs. Arsenal; Leicester vs. Burnley; West Bromwich Albion vs. West Ham; and Everton vs. Middlesbrough. China Shoes Outlet . Tomas Berdych and Radek Stepanek defeated Nenad Zimonjic and Ilija Bozoljac 6-2, 6-4, 7-6 (4) on the indoor hard-court at Belgrade Arena. The victory improved the Czech pairs impressive cup doubles record to 14-1. Cheap Shoes China . Bjorn, who had a 36-hole total of 8-under 134, made a testing six-foot putt to save par on the 16th and a birdie on the 17th before bogeying the final hole after a misjudged approach shot. American Kevin Streelman was in second place after shooting a 69. http://www.cheapshoeschinaonline.com/ . The 29-year-old from Port Colborne, Ont., has nothing but good things to say about former U.S. marine Liz (Girlrilla) Carmouche ahead of their co-main event Wednesday on the UFCs "Fight for the Troops" televised card in Fort Campbell, Ky. Cheap Adidas Shoes China . "I wrote 36 on my sheet at the beginning of the game," the Cincinnati coach said, referring the yard line the ball would need to be snapped from. Cheap Saucony Shoes China . -- Edmontons Val Sweeting is two wins away from a trip to Winnipeg to play in Canadas Road of the Rings in December. LAUSANNE, Switzerland -- Cheerleading and Thai kickboxing have made their way into the Olympic movement.The International Cheer Union and the International Federation of Muay Thai received provisional recognition Tuesday from the IOC executive board -- a first step on a long road to becoming a future Olympic sport.They were among 16 sports bodies which applied for IOC recognition earlier this year, and they join 35 other sports on the list of recognized federations.Cheerleading and Muay Thai will now be assured of $25,000 in IOC funding per year. They are also eligible for other development programs and access to content of the IOCs digital Olympic Channel.IOC sports director Kit McConnell said the twoo federations were given provisional recognition for a period of up to three years.dddddddddddd During that time, the IOC executive board can recommend full recognition, another necessary step in the drawn-out path toward joining the Olympic program.McConnell said the cheerleading federation has over 100 national federations and nearly 4.5 million registered competitors.It is a sport with growing popularity, a strong youth focus in schools and universities and we noted that, he said.McConnell said Muay Thai has 135 national federations and nearly 400,000 registered athletes. ' ' '