BUFFALO, N.Y. - Buffalo Bills coach Doug Marrone suddenly has a big hole to fill at defensive co-ordinator with Mike Pettine leaving to take over the Cleveland Browns. With Pettine hired on Thursday, Marrone is forced to enact the contingency plan the team began preparing once Cleveland honed in on his key assistant. "We have a plan in place," Marrone said, in a statement released by the team. "I want to take this opportunity to congratulate Mike on becoming the Browns new head coach and thank him for all of his time and efforts with our team this past season. He did an excellent job of improving our defence, and we wish him the best." Marrone did not reveal a timetable or list of potential candidates. Depending on whether any Bills assistants follow Pettine to Cleveland, Buffalo has several in-house assistants to consider, most notably linebackers coach Jim ONeil and defensive backs coach Donnie Henderson. ONeil has spent the past five seasons working under Pettine, including the first four with the New York Jets. Henderson is the most experienced, having split 29 years as a coach at the NFL and college levels, including stints as a defensive co-ordinator with the Detroit Lions in 2006 and Jets, 2004-05. Replacing Pettine is not something Marrone was anticipating a year after luring the former Jets defensive co-ordinator to Buffalo to become the most-high profile member of his first staff. Pettines departure is a significant blow to a defence that emerged as the Bills strength last season. And the loss has the potential of under-cutting much of the progress the Bills hoped would carry over into next season after a 6-10 finish that extended the NFLs longest active playoff drought to 14 seasons. Continuity also becomes an issue for a defence set to be led by a fourth co-ordinator in as many years. Pettine succeeded Dave Wannstedt, who was fired along with Chan Gailey and his staff a year ago. Wannstedt replaced George Edwards, who struggled during his two years as co-ordinator. Pettine, in one season in Buffalo, played a considerable role in transforming the Bills once-porous defence into an aggressive unit that finished second in the NFL with a franchise-record 57 sacks. Though the Bills were inconsistent against the run, they still finished 10th in the NFL in fewest yards allowed — Buffalos best ranking since finishing second in 2004. The Bills success on defence translated into four players earning Pro Bowl selections, including defensive tackle Marcell Dareus as a last-minute injury replacement. Also selected were defensive linemen Mario Williams and Kyle Williams and safety Jairus Byrd. In November, Pettine indicated he was in no hurry to leave Buffalo. He enjoyed the community and also wanted to continue what he began building with the Bills. Pettines approach and no-nonsense demeanour was popular among players and staff. During the Bills bye weekend off in November, Pettine and a number of assistants spent a weekend sharing a cabin in nearby Ellicottville. He also earned raves among several veterans, including Mario Williams, who led the team with 13 1/2 sacks. Pettine learned his defensive approach under Jets coach Rex Ryan. And its a style thats somewhat unique among NFL teams in placing a premium on players versatility and capability of playing several positions to confuse offences. The secondary benefited in finishing second in the NFL with 23 interceptions. The change at co-ordinator could have an effect on Byrds desire to return to Buffalo. Byrd played last season under a one-year contract after the Bills retained his rights by applying the franchise tag. The Bills have the option of tagging Byrd once more this off-season, but are also making a push to sign the player to a long-term contract. Despite initial reservations, Byrd enjoyed playing in Pettines system and working with Henderson. The defence also featured the Bills most promising youngster, linebacker Kiko Alonso, an NFL defensive rookie of the year candidate. Cheap Asics Shoes Sale .com) - Winnipeg Jets defenseman Dustin Byfuglien, Detroit Red Wings forward Tomas Tatar and New York Islanders right wing Kyle Okposo were named the NHLs players of the week on Monday. Cheap Wholesale Asics .com) - Virginia is for loving Latrell Scott. http://www.cheapasics.us/ .com) - Edmonton Oilers forward Taylor Hall left Saturdays game against the Senators in the second period with a left knee injury. Asics Shoes Sale Online .com) - Patrick Reed poured in a 19-foot birdie putt on the first playoff hole Monday to defeat Jimmy Walker and win the Hyundai Tournament of Champions. Asics Shoes Clearance Sale . Terms of the contract were not disclosed by the club. Clemons spent his first five NFL seasons with the Miami Dolphins, who selected him in the fifth round of the 2009 draft out of Clemson.It proved a Saturday full of talking points in Monaco and Sky F1s Ted Kravitz is here to round them all up in his Qualifying Notebook. From Daniel Ricciardos first career pole position, to the appearance of more Mercedes reliability problems, and Ferraris latest disappointment, Ted explains the stories behind all 11 teams and 22 drivers qualifying sessions.And find out who earns Teds very own Star of Qualifying award. He also takes a tour of Red Bulls floating energy station, where he getss a chance to put his famous football knowledge to the test with a Premier League star…Hit play on the video above to watch the Notebook in full.ddddddddddddWatch the Monaco GP live on Sky Sports F1. The race starts at 1pm on Sunday, with build-up underway at 11.30am. Or watch the race without a contract for £6.99 on NOW TV. 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