Sergey Kovalev earned a hard-fought unanimous points decision against Isaac Chilemba to stay on course for a big pay-per-view bout against Andre Ward.In only his third professional fight in his homeland, U.S.-based Kovalev (30-0-1, 26 KOs) could not produce the knockout performance he wanted at the DIVS Sports Palace in Ekaterinburg, Russia, Monday.It was Kovalevs poorest performance in his three-year reign as world light-heavyweight champion that will have been encouraging viewing for Ward at home in Oakland. However, Kovalevs status as unified world light-heavyweight champion was never in doubt at the end of 12 rounds and he was awarded scores of 117-110, 116-111 and 118-109.Malawi-born Chilemba (24-4-2, 10 KOs) recovered from a seventh round knockdown to force Kovalev to go the distance for just the fourth time in his career. Only Bernard Hopkins had managed to go to points with Kovalev in eight previous world title fights after a disappointing and unimaginative display from the Russian.It also sets up a big bout next against Ward at the T-Mobile Arena in Las Vegas on Nov. 19. Undefeated former super-middleweight world champion Ward (29-0, 15 KO) will have to overcome Alexander Brand (25-1, 19 KOs) on Aug. 6 in his own interim bout before the fight with Kovalev is confirmed.The fight with Ward has become a more interesting prospect after Florida-based Kovalev failed to dominate the first half of the fight against a plucky challenger.Chilemba, 29, had lost his previous fight -- controversially on points to Eleider Alvarez in Nov. -- in a WBC world title eliminator. Despite that setback, Chilemba still got his shot at Kovalevs WBA, IBF and WBO world light-heavyweights titles and proved a stubborn opponent.The challenger got through with some right hands and Ward will have been encouraged to see how Chilemba managed to land in the fourth round when Kovalev was caught coming forward with left jabs.Kovalev began finding his range and rhythm later in the fifth round but in the sixth was caught flush by a left hook. Kovalevs biggest weapon is his right hand which Chilemba finally found out about in the seventh round.The Russian followed a straight left with a right to the jaw which left Chilemba staggering across the ropes and down for a count. Had there been more time left in the round, Kovalev might have finished it there and then.Chilemba was hurt again late in the eighth round after being caught with a left to the chin but Kovalev, looking tired, allowed his opponent to grow in confidence in round ten. Kovalev finished strong, with blood pouring from Chilembas nose, but his renowned power punching could not force the stoppage that his home crowd wanted.Kovalev has been based in the United States since turning professional seven years ago and last boxed in his homeland at the same venue five years ago. That bout ended in tragedy when Kovalevs opponent Roman Simakov, who was knocked out in the seventh round, died as a result of head injuries three days later. Wholesale Salomon Shoes . It was the kind of score that might make everyone else wonder which course he was playing. Except that Graeme McDowell saw the whole thing. Crouched behind the 10th green at Sheshan International, McDowell looked over at the powerful American and said, "Ive probably seen 18 of the best drives Ive seen all year in the last two days. Cheap Salomon Canada . PETERSBURG, Fla. http://www.wholesalesalomoncanada.com/ . Brad Jacobs and his Sault Ste. Marie, Ont., team took control of the game early. Salomon Shoes Canada Clearance . The scientists believe the small earthquake during a Marshawn Lynch touchdown was likely greater than Lynchs famous "beast quake" touchdown run three years ago, which also came against New Orleans during a playoff game. Salomon Shoes Canada . -- Ty Montgomery had 290 all-purpose yards and two touchdowns, and fifth-ranked Stanford held on to beat No. TAMPA, Fla. -- The Tampa Bay Buccaneers waived tight end Austin-Seferian Jenkins on Friday, hours after the third-year pro was arrested on suspicion of driving while under the influence.The Florida Highway Patrol said in a news release that Seferian-Jenkins, a second-round draft pick out of the University of Washington in 2014, was driving between 75 and 80 mph on Interstate 275 when the football players vehicle cut in front in front of a troopers cruiser and began weaving back and forth.Sgt. Steve Gaskins said Seferian-Jenkins was charged with DUI and violation of an ignition interlock device restriction from an arrest in Washington in 2013. The player refused a breath test at the Hillsborough County Jail.We are very disappointed in todays news, Bucs general manager Jason Licht said in a statement. After careful consideration, we felt this was the right decision at this time.The move was announcced about two hours after practice, which Seferian-Jenkins did not attend.ddddddddddddCoach Dirk Koetter was unavailable comment on the decision. Earlier, he said the team was still gathering information on the arrest, which occurred shortly before 4 a.m.By the time we found out, we were into meetings this morning and weve been on the practice field, Koetter said, adding he and Licht planned to meet later.Seferian-Jenkins had three receptions for 44 yards and one touchdown in two games this season. He started 12 of 16 games he appeared in the previous two years and has 45 career receptions for 603 yards and seven TDs.The Bucs promoted tight end Alan Cross from the practice squad to fill the roster opening.---AP NFL website: www.pro32.ap.org and http://twitter.com/AP-NFL ' ' '