The Oakland Raiders have employed nine different head coaches since the last time Jon Gruden patrolled the sideline for the Silver and Black 17 years ago.

Speaking Wednesday on 680 KNBR-AM, Gruden lamented about the "lack of continuity" that has led to some of the inconsistencies and poor records the Raiders have endured since he was traded to Tampa in 2002.

"We also, I think, need to put in a system in place here that our players can grow within," Gruden said. "We've had 10 different head coaches, I believe, since I've been here. We've had a number of different offensive coaches and poor Reggie McKenzie has had to draft different players to fit different schemes and systems. I think that's hurt us."

Along with churning through coaches every two years or so, the Raiders have filtered through offensive coordinators like ordinary folk change Britas: Marc Trestman (2002-2003), Jimmy Raye (2004-2005), Tom Walsh (2006), Greg Knapp (2007-2008), Ted Tollner (passing game coordinator, 2009), Hue Jackson (2010), Al Saunders (2011), Knapp again (2012), Greg Olson (2013-2014), Bill Musgrave (2015-2016), Todd Downing (2017), Greg Olson (2018).