Ron Waller (born February 14, 1933) was a National Football League running back for the Los Angeles Rams from 1955 through 1958 and for the American Football League's Los Angeles Chargers in 1960. He was the head coach of the NFL's San Diego Chargers for the final six games of the 1973 season, and held the same position with the Philadelphia Bell of the World Football League in 1974.
Ron Waller did not coach all of the seasons of the NFL during 1973, but did during 1974. He continued to coach after the initial 6 games. He was 40 years old when got his first coaching job. 
( z1 multi-sentence :snt ( z2 contrast :ARG1 ( z3 coach :polarity - :ARG0 ( z4 person :name ( z5 name :op "Ron" :op "Waller" ) ) :time ( z6 season :mod ( z7 league :name ( z8 name :op "Football" :op "League" ) ) :mod ( z9 all ) ) :time ( z10 date-entity :year 1973 ) ) :ARG2 ( z11 coach :ARG0 z4 :time ( z12 date-entity :year 1974 ) ) ) :snt ( z13 continue :ARG0 ( z14 he ) :ARG1 ( z15 coach :ARG0 z14 :time ( z16 after :op ( z17 game :quant 6 :mod ( z18 initial ) ) ) ) ) :snt ( z19 age :ARG1 ( z20 he ) :ARG2 ( z21 temporal-quantity :quant 40 :unit ( z22 year ) ) :time ( z23 get :ARG0 z20 :ARG1 ( z24 job :mod ( z25 coach ) :ord ( z26 ordinal-entity :value 1 ) :poss z20 ) ) ) )