Sean McVay
On January 12, 2017, McVay was hired to become the 28th head coach of the Los Angeles Rams at the age of 30 years, 11 months, 19 days. The Rams had made him the youngest head coach in modern NFL history, surpassing Lane Kiffin, who was 31 years, 8 months, 14 days old when hired by the Oakland Raiders in 2007.
George Allen (American football coach)
Rams owner Carroll Rosenbloom was searching for a new coach after parting ways with Chuck Knox, and decided to bring Allen back. Allen's hiring was announced on February 1, and he returned to Los Angeles in 1978 with much media fanfare. His second stint as the Rams' head coach was an unfortunate experience for all concerned. Unlike his first stint, Allen did not have full authority over personnel. He thus worked with general manager Don Klosterman to oversee a talented roster that had made the team a perennial playoff challenger.