Title: 2012 Oakland Raiders season
Content:  previously coached the Houston Texans' offensive line for the past 5 seasons and helped create a rushing offense that had ranked in the top two over the past two seasons. Pollack is schooled in the Zone Blocking philosophy that the Raiders are looking to implement. ; On February 6, the Raiders announced the hiring of Jason Tarver as their new defensive coordinator and replacement for the fired Chuck Bresnahan. Tarver had previously spent a decade with the San Francisco 49ers as a defensive assistant before moving to Stanford, where he became a co-defensive coordinator and inside linebackers coach. During his 
Title: 2012 Oakland Raiders season
Content:  with the Cardinal, he coached on a defense that was ranked either 1st or 2nd in every major rush defense category. ; On February 8, the Raiders announced that veteran offensive coach Al Saunders would be staying with the team in his new role as Senior Offensive Assistant. Saunders, who had spent 2011 as the Raiders' Offensive Coordinator under Hue Jackson, was allowed to interview for other posts – notably for the Kansas City Chiefs' vacant Offensive Coordinator's job – but instead returned to the team. ; On February 14, the Raiders announced the hiring of six assistants; quarterbacks coach 
Title: 2012 Oakland Raiders season
Content:  February 2, the Raiders announced the hiring of current Houston Texans' quarterbacks coach Greg Knapp as their new offensive coordinator. Knapp took over from Al Saunders, who was reassigned within the Raiders' coaching structure. Knapp had a previous stint with the Raiders in 2007 and 2008, where he helped the Raiders become one of the league's best rushing teams as they ranked 6th and 10th respectively. Knapp also became the first assistant coach to be hired by Allen in his capacity as head coach. ; On February 2, the Raiders hired Frank Pollack as their new offensive line coach. Pollack 
Title: 2012 Oakland Raiders season
Content:  DeFilippo – returning for his second stint with the Raiders -, defensive backs coaches Johnnie Lynn & Clayton Lopez, tight ends coach Mark Hutson, wide receivers coach Ted Gilmore and Defensive Line coach Terrell Williams. Hutson, Gilmore and Williams are all making their first coaching appearances in the NFL. Hutson had been a tight ends and offensive line coach at the collegiate level since 1990, recently working with Tulane. Gilmore had previously worked under ex-Raider Head Coach Lane Kiffin at USC, and Terrell Williams had been a defensive line coach and co-defensive coordinator for Texas A&M. ; On February 17, 
Title: 2018 Oakland Raiders season
Content:  On January 6, 2018, the Raiders hired their former head coach, Jon Gruden, who returned to the Raiders and coaching from ESPN's Monday Night Football. Gruden received a 10-year, $100-million contract to return to the Raiders. Gruden last coached in the NFL in 2008 with the Tampa Bay Buccaneers and last coached the Raiders in 2001. At the press conference announcing the hiring of Gruden on January 9, Gruden announced that Los Angeles Rams quarterbacks coach Greg Olson had been hired as offensive coordinator, though Gruden would call plays, while former Cincinnati Bengals defensive coordinator Paul Guenther was hired as the new defensive coordinator. Gruden also announced that former Tampa Bay Buccaneers and Dallas Cowboys special teams coordinator Rich Bisaccia was hired to serve as special teams coordinator. On January 29, the Raiders named Brian Callahan, son of their former head coach Bill Callahan, as the new quarterbacks coach.
Title: Southern Oregon Raiders football, 2006–08
Content:  The Raiders experienced their first winning season since head coach Jeff Olson resigned to become the defensive coordinator at nearby North Medford High School.
Title: History of the Oakland Raiders
Content:  On January 14, 2015, Jack Del Rio, the then-Denver Broncos defensive coordinator and former Jacksonville Jaguars head coach, was hired by the Oakland Raiders to be their new head coach. Del Rio's new coaching staff included former Minnesota Vikings offensive coordinator Bill Musgrave as offensive coordinator and former Vikings head coach Mike Tice as offensive line coach; both had worked with Del Rio at the Jaguars in the past. On February 19, 2015, the Raiders and the Chargers announced that they would build a privately financed $1.78 billion stadium in Carson, California if they were to move to the Los Angeles market. Both teams stated that they would 
Title: 2002 Oakland Raiders season
Content:   The 2002 season was the Oakland Raiders' 33rd in the National Football League, their 43rd overall, their eighth since returning to Oakland and their first under head coach Bill Callahan. The Raiders played their home games at Network Associates Coliseum as members of the AFC West. The Raiders had essentially traded their head coach Jon Gruden following the 2001 season. The Raiders hired Callahan, the offensive coordinator under Gruden, to return them to the playoffs. Despite their talent, the Raiders struggled in the first half of the season. A 4–0 start was followed by four consecutive losses; the team's 4–4 record stunned many 
Title: 2011 Oakland Raiders season
Content:  On January 10, 2012, the Raiders announced that head coach Hue Jackson would be fired.
Title: 2012 Oakland Raiders season
Content:  Broncos' defensive coordinator. At 39, Allen becomes one of the youngest Head Coaches in the league. As defensive coordinator he had helped turn the Broncos' worst-ranked defense into an aggressive, solid unit in 2011. Allen was signed to a four-year deal and becomes the first defensive-minded head coach hired by the Raiders since the hiring of legendary coach John Madden. GM Reggie McKenzie has promised Allen the freedom to pick and choose his own assistants and have a say on player signings and drafting, input that very few of the Raiders' head coaches had had in the Al Davis era. 

Question: who are the coaches for the oakland raiders?
Answer: Dennis Allen.