Walker was the first pick of the draft.
The defensive end and his teammate were the favorites to be the top pick.
For the first time since 1991, the first five defensive players chosen by the Detroit Lions were all Hutchinson.
Walker did not attend the event in Las Vegas, but watched from a hotel in Atlanta.
It was the second year in a row that theJaguars had the first pick after selecting quarterback Trevor Lawrence.
Walker emerged from hundreds of NFL hopefuls playing in the US college system last season, starting all 15 games for Georgia as they won the national championship.
The only quarterback chosen in the first round was Kenny Pickett, who was taken by the Pittsburgh Steelers with the 20th pick.
David Ojabo, who was born in Nigeria and raised in Scotland, was not among the first 32 picks in the first round.
After the Covid-19 outbreak put paid to plans to host the event in Las Vegas in 2020, all of the glamour associated with it returned this year.
The Las Vegas version of the draft took place last year, but this year the stage was built in front of the Bellagio fountains and the main stage was built beside the Caesars Forum.
Kayvon Thibodeaux, who was expected to go first in the draft, was one of 21 top prospects who attended the event.
The New York Giants took an offensive tackle with the seventh pick and also took a defensive end with the fifth pick.
The Giants and Jets both had two picks in the top 10, and the Jets chose Ahmad andGarrett Wilson.
The Philadelphia Eagles traded the 18th pick and a third-round choice to the TennesseeTitans for AJ Brown.
The 25-year-old has been the top receiver in his first three years in the NFL but entering the final year of his rookies contract, both parties were struggling to agree on financial terms for a new deal.
The Eagles will give Brown a four-year deal worth $100m, while theTitans chose another receiver with the 18th pick.
The bear hugs for Roger Goodell were back, and the second pick of the first round, linebacker Devin Lloyd, stole the show after being chosen by Jacksonville.
Lloyd vowed to play another year at Utah rather than declaring for the 2021 draft, aiming to win a championship and become a first-round pick in 2022.
Lloyd celebrated by lifting the commissioner off the stage in Vegas after seeing his other dream come true, after the Utah team won the conference championship nine weeks after he was killed.