Walker, a senior outdoor All-American, again ran away from the field as he won the 200 meter dash by nearly half a second, breaking his own day-old meet record with a 21.17 time that ranks 36th nationally.
It was .39 faster than the second-best mark Thursday. Walker took the 60 meter dash title Wednesday in 6.71, claiming his first Southland Indoor championship by 0.11 over the next-best runner.
Thursday, he pulled off NSU's first sweep of the 60 and 200 at the meet since All-American Ronnie Powell in 1998.
A day after posting the seventh-best long jump (25-6) in the country and the best mark at the Southland Indoors since 1991, Williams posted another personal best and won the triple jump by leaping 50-4 ¾ on his first attempt of the day.
The junior from Acadiana High School became the first Demon since USA Olympian Kenta Bell in 1998 and 2000 to pull off the long and triple jump double at the Southland Indoors.
Their four victories provided the bulk of the scoring for the Demons as Northwestern was fifth overall and the second-highest Louisiana finisher with 60 points.
The Lady Demons had two fifths. Quiana Griffin ran 55.70 in the 400 meters and was the lead runner on the 4x400 meter relay unit that posted a 3.51.71 time with Shannon Moore, Nijah Lain and Consuela Lindsay.
Walker and Williams may compete in a last-chance meet next week. The outdoor season begins for Northwestern on March 15 at Louisiana Tech's Jim Mize Invitational.