WASHINGTON -- After a cautious start, the Washington Redskins made their first big move of free agency, luring former Dallas Cowboys defensive lineman Jason Hatcher with a four-year, $27. Gregory Polanco Jersey .5 million contract, according to a person familiar with the deal. Hatcher agreed to terms Thursday, according to a person who spoke on condition of anonymity because the contract had not been signed. He gives the Redskins a much-needed pass rush from the defensive line to supplement linebackers Brian Orakpo and Ryan Kerrigan. Hatcher was one of the days several moves aimed at upgrading the defence of a 3-13 team. The Redskins also agreed to a one-year contract with free agent linebacker Darryl Sharpton, according to another person familiar with the deal who also spoke on condition of anonymity because the contract had not yet been signed. The Redskins also signed former Oakland Raiders cornerback Tracy Porter, according to reports. The team announced that it signed defensive end Clifton Geathers and that receiver Santana Moss had signed his contract, a one-year deal reached on Tuesday. Hatcher, 31, has played eight seasons with the Cowboys, but he didnt become a regular starter until 2011. He had 11 sacks last year, including two against the Redskins in a 31-16 Cowboys win at Dallas in October, and was selected to his first Pro Bowl. Sharpton has started 19 games over four seasons with the Houston Texans, including eight starts last year after Brian Cushing went down with a knee injury. He could be a candidate to replace inside linebacker London Fletcher, who is expected to retire, and could also help improve the Redskins struggling special teams. Geathers has been a backup for four teams over four NFL seasons. He spent last year with the Philadelphia Eagles. He is the nephew of James "Jumpy" Geathers, a 13-year NFL veteran who played for the Redskins from 1990-92. The Redskins were still searching for solutions at safety. Ryan Clark, who played for the Redskins in 2004-05 before leaving for eight seasons with the Pittsburgh Steelers, was among the free agents who visited Redskins Park on Thursday. The Redskins spent the first two days of free agency making modest signings while losing out in the bidding for bigger names. Theyve added a No. 2 receiver (Andre Roberts), a potential starting guard (Shawn Lauvao) and a special teams contributor (Adam Hayward). Pittsburgh Pirates Gear . As each game passes (each has played close with the exception of last night) it becomes clearer just how evenly matched these two teams are and how one mistake, or one bad inning, is likely to sway the result. Pirates Jerseys China . Olsen, who is 6-foot-3 and 305 pounds, can play either centre or guard. The 25-year-old Olsen played 16 games and made four starts in 2012 with the New Orleans Saints. LONDON -- Manchester City used another rampant scoring display to replace Arsenal at the top of the Premier League with a 5-1 win at Tottenham on Wednesday, while Chelsea lost ground in the title race with a 0-0 draw against West Ham. After beating Spurs 6-0 at the Etihad Stadium, Manuel Pellegrinis side was unstoppable at White Hart Lane as well and extended its unbeaten run to 20 matches, in which time they have scored 69 goals. City received a decisive boost when Danny Rose was sent off in the 50th minute for tripping Edin Dzeko. Yaya Toure converted the penalty before Dzeko made it 3-0. Etienne Capoues pulled one back but Stevan Jovetic and Vincent Kompany added gloss to victory. City now leads Arsenal by one point, with Chelsea lagging three points behind. Elsewhere, Sunderland beat Stoke 1-0 and Aston Villa defeated West Bromwich Albion 4-3 in a derby that saw six goals scored in the first half. Since the thrashing at City and the subsequent sacking of coach Andre Villas-Boas, Tim Sherwood had overseen an upturn in fortunes at White Hart Lane, with Spurs undefeated under their new manager and having won their last four Premier League matches. Pellegrinis team was therefore expecting a tougher test at White Hart Lane. They had the better start as the in-form Sergio Aguero went close in the fourth minute with a shot from an angle that hit the post. Aguero looked unstoppable during the first half and put his team in front in the 15th minute, scoring for the eighth successive game when he slipped the ball past goalkeeper Hugo Lloris from David Silvas assist. The Argentina strikers header then forced Lloris to a beautiful one-handed save. Unfortunately for City, Aguero picked up an apparent hamstring injury while sprinting for the ball and was replaced by Stevan Jovetic. "We will see tomorrow with the doctor what happened with him, maybe he has a problem with his hamstring, we will see how serious it is," Pellegrini said. "Sergio is a top player but we dont depend on just one player so we hope itts the moment where Stevan Jovetic can play and hope that Sergio can join us again as soon as possible. Grant Jackson Jersey . quot; The strikers injury was not a factor as City was awarded a penalty five minute into the second half when Rose was shown a red card for bringing down Dzeko with a tackle from behind. Toure converted by sending Lloris the wrong way. A man down, Tottenham conceded another goal two minutes later, with Dzeko scoring from a rebound after Lloris saved Silvas effort onto the post. Tottenhams Etienne Capoue pulled one back in the 59th from a corner, but Jovetic then found space in the area to beat Lloris and Kompany rounded off a perfect night with a clean finish. At Stamford Bridge, West Ham defended for most of the second half and managed to contain Chelseas assaults to secure an important point in its fight to remain in the top flight next season. Demba Ba hit the post from close range in added time before Hazard missed two consecutive chances and Etoo had a goal disallowed for a foul on Adrian. "They defended with their hearts, I respect that and praise that," Mourinho said. "I dont think with matches like this we can sell Premier League across the world. My team did everything possible." Aston Villa edged West Brom in a prolific West Midlands derby. The Baggies led 2-0 after Chris Brunt opened the scoring and Fabian Delph scored an own goal. But Andreas Weimann lobbed in to pull one back, Leandro Bacuna levelled and Delph made amends to put Villa ahead. Youssuf Mulumbu equalized two minutes before the break before Benteke had the final say when he earned a penalty and slotted the spot kick into the bottom left corner in the 64th. Benteke has now scored three goals in three games, helping Villa establish itself firmly in midtable. West Brom fell to 15th, just three points outside the relegation zone. Adam Johnson scored in the first half to give Sunderland a 1-0 win over 10-man Stoke and lift his team out of the relegation zone for the first time since August. ' ' '