He is currently a senior manager for business development for Huskies Sports Properties, the rights-holder for University of Washington Athletics.
Sixkiller graduated in 1969 and had hoped to stay in-state and play for Oregon State in Corvallis, but head coach Dee Andros declined to offer him a scholarship, wary of his short stature (5 ft 11 in (1.80 m), 171 lb (78 kg)).
[3][5] On the advice of Willis, head coach Jim Owens recruited Sixkiller and offered him a scholarship to the University of Washington in Seattle.
Unselected in the 1973 NFL draft, Sixkiller had tryouts with the Los Angeles Rams in 1973,[6] and with the Toronto Argonauts of the Canadian Football League in 1974.
He is currently an executive for sports marketing firm IMG College, serving his alma mater, the University of Washington.