NEW YORK — The New York Jets are exploring veteran options to back up quarterback Ryan Fitzpatrick.

With expected starter Geno Smith out 6-10 weeks with a broken jaw, the Jets brought Matt Flynn in for a physical Friday, but did not work him out. The 30-year-old Flynn, who was dealing with a hamstring issue, was released by New England earlier this week.

A signing of Flynn was not imminent by the Jets, who have only rookies Bryce Petty and Jake Heaps on the roster to back up Fitzpatrick.

Flynn has also been with Green Bay (twice), Seattle, Oakland and Buffalo. He threw for 480 yards and six touchdowns – both Packers records – in Green Bay’s 45-41 victory over Detroit on Jan. 1, 2012.

Fitzpatrick was thrust into the starting role when Smith’s jaw was broken by a punch from then-teammate Ikemefuna Enemkpali in the Jets’ locker room Tuesday. Smith is expected to miss 6-10 weeks.

Enemkpali was claimed off waivers by Buffalo.

TEAMS WARNED: The NFL warned teams about fighting during games in response to inter- and intra-team altercations that have erupted in training camp.

In a memo, executive vice president Troy Vincent reminded all 32 teams that “fighting will not be tolerated.” Vincent asked coaches, general managers and club executives to remind players of the rules, and noted that the prohibition of fighting will be a point of emphasis for officials.

PATRIOTS: Tom Brady’s attorneys filed more papers in U.S. District Court in his lawsuit to overturn his four-game suspension by the NFL for his role in the use of deflated footballs in the AFC championship game.

Lawyers for the star quarterback of the Patriots stressed in their memorandum of law that the league is attempting to misdirect the court and “at every turn, the NFL misstates the record.”

• Defensive lineman Casey Walker signed an undisclosed contract.

Walker spent part of last season on the Patriots’ 53-man roster and practice squad. He played five games.

BRONCOS: The lawyer for John Bowlen, the 29-year-old son of the team owner, has been granted more time to review his client’s domestic violence case.

Bowlen and attorney Harvey Steinberg will appear again in Arapahoe County District Court on Aug. 24.

The younger Bowlen was arrested this summer after allegedly pushing his girlfriend during an argument in Glendale. He was arrested on suspicion of third-degree assault and harassment.

He is on indefinite leave from his job with the Broncos as a marketing assistant.