Jason Witten says he's ‘invigorated’ by his new opportunity with the Las Vegas Raiders after spending 16 seasons with the Dallas Cowboys. Witten says the fit with the Raiders and coach Jon Gruden is ideal and he hopes to contribute to his new team as a red zone receiver, blocker and teacher to his younger teammates. The 38-year-old Witten is fourth all-time in receptions. He's coming off a 63-catch season in Dallas after taking a one-year hiatus as an analyst for ESPN where he replaced Gruden in the “Monday Night Football” booth.