SAN FRANCISCO -- The San Francisco 49ers are keeping another key member of their ball-hawking defence for the long haul. The reigning NFC champions have signed cornerback Tramaine Brock to a $16 million, four-year contract extension that takes him through the 2017 season. The deal includes $7 million in guaranteed money. The Niners (6-4) announced the deal late Friday, and Brock is expected to move into the starting lineup for Monday nights game at Washington in place of the injured Tarell Brown. It would be the second career start for Brock after he also started against Houston on Oct. 6. Brock has shined in an increased role this season, making a team-leading four interceptions to go with 18 tackles. "Tramaine is a great example of what hard work and dedication can lead to," 49ers general manager Trent Baalke said in a statement. "He has taken advantage of his opportunities since signing with our team as an undrafted free agent in 2010 and has certainly earned this extension. Extending the contracts of our young and talented players has always been, and will continue to be, one of our primary goals." He had 16 tackles and a forced fumble last season and shared the team lead with 15 tackles on special teams. His primary role was a special-teams standout until he has recently received more responsibility in the secondary. The 25-year-old Brock made two interceptions in 11 games in 2011. He signed a one-year tender in April for this season. Baalke and coach Jim Harbaugh have worked to retain their talented young players for the long haul, something they feel is essential to sustaining the franchises recent success. The 49ers talented linebacking corps of NaVorro Bowman, Patrick Willis, Ahmad Brooks and Aldon Smith are signed long-term. Last November, Bowman received a five-year contract extension through the 2018 season, Willis is signed through 2016, Brooks through 2017 and Smith through 2015. Cornerback Carlos Rogers received a $31.3 million, four-year contract in March 2012. With Brock now signed for the immediate future, the 49ers can allow Chris Culliver -- the teams No. 3 cornerback last season -- plenty of time to recover from a season-ending knee injury suffered in August during training camp. Brown sustained a rib injury during last Sundays 23-20 loss at New Orleans. "Hes just got to be ready to play every play not knowing hes got built in breaks when were in base like he had for the first however many games he was playing," defensive co-ordinator Vic Fangio said Friday of Brock. "There is a change, but its just got to be a mental adjustment for him." Vapormax Plus Womens Ireland . A steady downpour and low temperatures were predicted for much of the night. No makeup date was immediately announced, although it was determined that the game will not be part of a doubleheader on Wednesday. Vapormax Plus Wholesale . Louis Cardinals, the team will be celebrating the 25th anniversary of the opening of the SkyDome. Jays legends Jimmy Key and Ernie Whitt, members of playoff and World Series-winning teams of the past, will be on hand for the festivities to look back at what was the beginning of the Jays halcyon years. http://www.outletvapormaxireland.com/vap...sale-china.html. -- New York Yankees centre fielder Jacoby Ellsbury was sent for an MRI Thursday of his ailing right calf, which was negative. Vapormax Flyknit Womens Ireland . - Josh Sterk scored twice to lead the Oshawa Generals to a 7-1 rout of the Ottawa 67s in Mondays Ontario Hockey League action. Vapormax Plus Mens Ireland . -- Canadian womens amateur golf champion Brooke Henderson is a little less starstruck as she prepares for her second career appearance at an LPGA Tour major event.TOKYO -- The Czech Republic advanced to the semifinals of the Davis Cup on Saturday, beating Japan in the doubles match to give the defending champions an insurmountable 3-0 lead. Radek Stepanek and Lukas Rosol backed up their wins in Fridays singles by combining to beat Tatsuma Ito and Yasutaka Uchiyama 6-4, 6-4, 6-4 at Ariake Colisseum. "This was our first Davis Cup doubles together," Stepanek said. "We did well and found our range together. We had it under control from the first set." The reverse singles matches are played on Sunday. The Czech Republic will playy the winner of the quarterfinal match between France and Germany in the last four in September.dddddddddddd Both teams were without their top players. Tomas Berdych sat out following two tough tournaments in the United States, while Kei Nishikori was sidelined after hurting his groin in a quarterfinal victory over Roger Federer in the Sony Open in Miami last week. The meeting between Japan and the Czech Republic is the first since 1935 and third in total. The nations split their two previous matches that were both played in Prague, with Japan winning the first in 1930. ' ' '