Reginald DeSean Davis (born September 3, 1976) is a former American football tight end and current running backs coach for Nebraska. He was signed by the San Diego Chargers as an undrafted free agent in 1999. He played college football at Washington.
The San Diego Chargers organization did not exist yet in 1954.
There isn't any information in the text on when the organization was first founded, so we don't know for sure without external knowledge. It's difficult because the system has a lot of trouble dealing with questions about existence or lack thereof.
( z1 exist :polarity - :ARG1 ( z2 organization :mod ( z3 team :name ( z4 name :op "San" :op "Diego" :op "Chargers" ) ) ) :time ( z5 yet ) :time ( z6 date-entity :year 1954 ) )