Quarterbacks coach Frank Cignetti was named offensive coordinator of the St. Louis Rams on Thursday.

Coach Jeff Fisher promoted Cignetti and tight ends coach Rob Boras, who was elevated to assistant head coach/offense.

“Frank has been a key asset to our staff over the last three years and I’m confident that he’ll do a great job leading our offense in this new role,” Fisher said. “He’s done a great job in some difficult circumstances and he brings a great body of work as a play caller at some significant college programs. Our players know and respect Frank, and I believe we’ll benefit from the continuity he’ll provide.”

The Rams promoted Cignetti to replace Brian Schottenheimer, who left to become offensive coordinator at the University of Georgia.

Cignetti will be the team’s primary play-caller, overseeing installations and game planning. Before he was hired by the Rams, he was offensive coordinator on the college level for Rutgers University (2011), Pittsburgh (2009-10), University of California-Berkeley (2008), North Carolina (2006), Fresno State (2002-05) and Indiana (Pa.) University (1997-98). He held dual coordinator and quarterback coaching roles with Pittsburgh, California and Indiana.

Cignetti, whose resume includes two decades of coaching experience, also served as the quarterbacks coach of the San Francisco 49ers (2007) and New Orleans Saints (2000-01).

As the assistant head coach/offense, Boras’ primary emphasis will be the running game. He will also coach tight ends for a fourth season.

“Rob is a tremendous teacher and he’s done a great job with our tight ends,” Fisher said. “His expanded role is sure to make us better as an offense.”

Neither has been a coordinator at the professional level, but Boras ran the offense at UNLV for three years. Boras, 44, has spent 11 seasons in the NFL coaching tight ends with the Rams, Jacksonville and Chicago.