BEREA, Ohio — He's still Baker the backup.

Despite rookie Baker Mayfield's stellar performance in his NFL preseason debut, the Cleveland Browns are not moving the No. 1 overall pick into the starting lineup ahead of Tyrod Taylor.

"National hype," quarterbacks coach Ken Zampese said, downplaying the outside push to elevate Mayfield after one game. "We have our plan, we're sticking to it and when it changes we'll all know."

Mayfield won over some doubters on Thursday night in a 20-10 win over the New York Giants. The Heisman Trophy winner from Oklahoma threw two touchdown passes to tight end David Njoku and showed pocket poise and awareness while completing 11 of 20 passes for 212 yards.

The reviews on Mayfield were exceptional, leading to cries that he should jump Taylor, who went 5 for 5 for 99 yards and posted a perfect 158.3 rating during his two series.

Following Sunday's practice, Browns coach Hue Jackson began shaking his head the moment a reporter began framing a question about the QB situation.

"Nothing's changed. Tyrod Taylor is our starter," Jackson said. "Baker Mayfield is a young, talented player. We have a bright, bright future here with that young man."

FIGHT AT JAGUARS PRACTICE: Jacksonville Jaguars defensive ends Yannick Ngakoue and Dante Fowler had to be separated repeatedly following practice Sunday.

Ngakoue and Fowler exchanged words while walking off the practice field, prompting the first skirmish. Calais Campbell grabbed Ngakoue briefly as Abry Jones and Lerentee McCray held back Fowler. Ngakoue spun away from Campbell and sprinted toward Fowler, but Jones got between them.

Ngakoue and Fowler got into it again outside the practice-field gates and had to be pulled apart by teammates, coaches and security personnel. General manager Dave Caldwell could be seen leading Ngakoue away by the wrist.

The altercation came on the last of 11 consecutive practices in full pads and in sweltering heat and humidity. It also came a few minutes after a scuffle near the end of practice, when Fowler appeared to shove tight end James O'Shaughnessy out of bounds following a reception. Teammates rushed to break it up.

EAGLES SIGN HACKENBERG: The Philadelphia Eagles have signed quarterback Christian Hackenberg and waived rookie offensive lineman Ian Park.

Hackenberg was selected in the second round of the NFL draft by the New York Jets in 2016 but didn't play in a game. He was traded to Oakland in May for a conditional 2019 draft pick and was released two weeks later.

The Eagles already have plenty of quarterback but Hackenberg gives them another arm in camp while Carson Wentz continues his recovery following surgery to repair two torn knee ligaments. Super Bowl MVP Nick Foles missed practices last week but returned Saturday.

BILLS ADD WALKER, RELEASE HUGHES: The Buffalo Bills have shuffled defensive tackles by signing Tyrunn Walker and reaching an injury settlement to release John Hughes.

Walker joins his third team in three years after getting a sack and forcing a fumble in 16 games, including four starts, with the Los Angeles Rams last season. He spent three seasons with New Orleans and two with Detroit and has 4 1/2 sacks in 58 career games.

CHIEFS LOSE TWO: Kansas City Chiefs right guard Laurent Duvernay-Tardif left practice to be evaluated for a concussion, while defensive tackle Xavier Williams and running back Damien Williams also left early.

The Chiefs said Xavier Williams had a stinger and Damien Williams hurt his shoulder.

Eric Berry did not participate in practice after skipping the Chiefs' preseason opener against Houston on Thursday night. Their star safety is dealing with a sore heel.

McKINNON TO UNDERGO MRI: San Francisco 49ers running back Jerick McKinnon has left practice with an injured right knee. The 49ers said Sunday that McKinnon will undergo an to determine the severity of the injury. McKinnon hurt himself about halfway through practice and stayed on the field to watch the finish.

McKinnon signed a $30 million, four-year contract in March.