Rookie backup Bailey Zappe threw for 309 yards and two touchdowns in his third NFL game, Bill Belichick tied George Halas for second on the all-time list with his 324th victory, and the New England Patriots buried the Cleveland Browns 38-15.

A person familiar with the Cleveland Browns' situation tells The Associated Press that quarterback Baker Mayfield didn't clear COVID-19 testing in time to be activated and play Monday, so third-stringer Nick Mullens will start against the Las Vegas Raiders.

The matchup between the Bengals and Broncos had no touchdowns scored in the first half.

Gifted two days by the NFL to maybe get healthier, the Browns prepared for a game they expected to play Saturday.

Only unvaccinated players and those experiencing possible symptoms of COVID-19 will be tested starting Sunday under the NFL’s revised protocols.

The Browns’ COVID-19 outbreak has widened and worsened.

Los Angeles Rams receiver Odell Beckham Jr. has been added to the COVID-19 reserve list as the NFL reports 28 more positive tests among players.

The Browns didn’t have much time to celebrate their biggest win this season before being hit with another off-field issue.

(AP Photo/Bill Kostroun)The Browns didn't begin preparing for the Steelers on the field but rather via Zoom calls. The Browns, who have nine players currently on the COVID-19 reserve list, will make the postseason for the first time since 2002 with a win. After learning of the positive tests, the team closed its facility to do contact tracing and Stefanski said players were doing virtual meetings — something that has become standard in 2020. "“I don’t think it would come as a surprise for a positive test in that market. The Browns did have a good development as starting right guard Wyatt Teller was cleared to practice after missing two games with a sprained ankle.

(AP Photo/Wade Payne, File)The Cleveland Browns are short-handed as they try to clinch the franchise’s first playoff berth since 2002, the longest active drought in the NFL. They learned Sunday morning they will be without starting rookie left tackle Jedrick Wills against the New York Jets because of an illness. Wills had been placed on the reserve/COVID-19 list on Thursday and activated Saturday, but was then downgraded Sunday. The Browns will be missing receivers Rashard Higgins, Donovan Peoples-Jones and KhaDarel Hodge and linebacker Jacob Phillips. The Indianapolis Colts will be without both starting offensive tackles when they face the Pittsburgh Steelers.

FILE - In this Sunday, Dec. 6, 2020 file photo, Cleveland Browns offensive tackle Jedrick Wills (71) takes the field for an NFL football game against the Tennessee Titans in Nashville, Tenn. Wills had been placed on the COVID list on Thursday, Dec. 24 after being in close contact with someone outside the team who had tested positive. The loss of Wills further depletes Cleveland's offensive line; starting right guard Wyatt Teller will miss his second straight game with a sprained ankle. In addition to Landry, the Browns will be missing receivers Rashard Higgins, Donovan Peoples-Jones and KhaDarel Hodge and linebacker Jacob Phillips. They were placed on the COVID-19 list on Saturday before the team flew to the New York area.

FILE - In this Nov. 1, 2020, file photo, Cleveland Browns wide receiver Jarvis Landry plays against the Las Vegas Raiders during the second half of an NFL football game, in Cleveland. The Browns will try to earn a playoff spot without four wide receivers, including star Landry, their starting middle linebacker and his replacement due to COVID-19 protocols. But despite the six players being out, an NFL spokesman said Cleveland's game at the New York Jets will be played as scheduled on Sunday, Dec. 27. Cleveland's game against the New York Jets will be played as scheduled, an NFL spokesman said. Like numerous NFL teams, the Browns have been dealing with positive cases for most of the season.

(AP Photo/Charles Rex Arbogast)Detroit Lions interim coach Darrell Bevell is the NFL’s first head coach to miss a game because of COVID-19 protocols even though he has not tested positive for the coronavirus. The Lions (5-9) will also be without defensive coordinator Cory Undlin, defensive line coach Bo Davis, defensive backs coach Steve Gregory and linebackers coach Ty McKenzie against Tampa Bay (9-5) on Saturday. For the Lions, they will lean on two men to call plays for the first time in an NFL game. I’m calling plays in an NFL game. “So I don’t want to speak for those guys.”The Lions closed their training facility on Tuesday because one player and one coach tested positive for the coronavirus.

Cleveland Browns quarterback Baker Mayfield (6) celebrates with teammate Austin Hooper (81) after they connect for a touchdown during the first half of an NFL football game against the New York Giants, Sunday, Dec. 20, 2020, in East Rutherford, N.J. (AP Photo/Seth Wenig)EAST RUTHERFORD, N.J. – Baker Mayfield led two 95-yard touchdown drives and the Cleveland Browns moved closer to ending their 17-year playoff drought with a 20-6 victory over the New York Giants on Sunday night. Mayfield was sharp all night, helping the Browns (10-4) bounce back from a 47-42 loss to Baltimore last Monday night. The win got the Browns closer to clinching their first playoff spot since 2002, the NFL’s longest drought. New York's opening drive stalled at the 8 after McCoy's throw to Evan Engram fell incomplete in the end zone. It could've worked, too: Kicker Graham Gano was wide open in the end zone.

(AP Photo/Wilfredo Lee)The Latest on Week 14 in the NFL (all times EST):___1:35 p.m.Patrick Mahomes is off to a rough start against Miami and the Dolphins' defense. Dolphins linebacker Jerome Baker sacked the Chiefs quarterback for a 30-yard loss for one of the longest sacks of Mahomes' career. The Chiefs’ quarterback tried to turn the corner around Baker but was tripped up at the 3-yard line. Mahomes also has been intercepted not once but twice by the Dolphins off deflected passes in just the first quarter. Byron Jones picked him off first, then Eric Rowe intercepted a second Mahomes' pass late in the first quarter.

The unbeaten Pittsburgh Steelers wound up relatively healthy for their game against the AFC North rival Cincinnati Bengals following a brush with the novel coronavirus. Defensive tackle Tyson Alualu is also back after missing a game with a knee injury. Cincinnati is without running back Joe Mixon, whose lingering foot injury is forcing him to miss a third game in a row. Receiver Cooper Kupp, left tackle Andrew Whitworth and running back Darrell Henderson all were active after missing practices with injuries. Raiders: T Kolton Miller (ankle), DT Maurice Hurst (ankle), QB Marcus Mariota, RB Theo Riddick, G John Simpson, DT Daniel Ross.

(AP Photo/John Froschauer)Denver Broncos running back Phillip Lindsay has cleared concussion protocol and will play against the Los Angeles Chargers. Bears: WR Ted Ginn Jr., DB Duke Shelley, RB Artavis Pierce, OL Cody Whitehair, WR Riley Ridley, LB Trevis Gipson. Seahawks: RB Chris Carson, RB Carlos Hyde, DE Benson Mayowa, CB Ugo Amadi, SS Jamal Adams, CB Shaquill Griffin. ___LOS ANGELES RAMS AT MIAMIRams: RB Raymond Calais, OL Brian Allen, WR Trishton Jackson, TE Brycen Hopkins, DL A’Shawn Robinson. Dolphins: RB/WR Lynn Bowden Jr., RB Salvon Ahmed, FB Chandler Cox, CB Jamal Perry, RB Jordan Howard, DE Jason Strowbridge.

(AP Photo/Charlie Riedel)Las Vegas starting offensive linemen Kolton Miller, Denzelle Good, Rodney Hudson and Gabe Jackson are active for the Raiders against Tampa Bay after spending time on the COVID-19 list this week. Safety Johnathan Abram remains on the COVID-19 list for at least one more day and is missing the game. ___TAMPA BAY AT LAS VEGASBuccaneers: QB Ryan Griffin, OL Aaron Stinnie, LB Quinton Bell, DL Khalil Davis, WR Cyril Grayson. Raiders: WR Bryan Edwards, CB Keisean Nixon, QB Marcus Mariota, G Patrick Omameh, DE David Irving. ___CAROLINA AT NEW ORLEANSPanthers: QB Will Grier, CB Stantley Thomas-Oliver, G John Miller, OL Mike Horton, WR Marken Michel.

___GREEN BAY AT TAMPA BAYPackers: RB Tyler Ervin, CB Kevin King, QB Jordan Love. ___NEW YORK JETS AT MIAMIJets: QB James Morgan, QB Sam Darnold, CB Quincy Wilson, LB Jordan Willis, T Mekhi Becton, DL Nathan Shepherd. Dolphins: B/WR Malcolm Perry, RB Salvon Ahmed, RB Jordan Howard, LB Kyle Van Noy, DE Jason Strowbridge. ___HOUSTON AT TENNESSEETexans: WR Keke Coutee, CB Cornell Armstrong, RB Buddy Howell, ILB Peter Kalambayi, OT Charlie Heck, TE Jordan Akins. ___ATLANTA AT MINNESOTAFalcons: CB Jordan Miller, RB Qadree Ollison, S Jaylinn Hawkins, RT John Wetzel, DE Takk McKinley.

Cleveland Browns wide receiver Rashard Higgins (82) and quarterback Baker Mayfield celebrate after a 15-yard touchdown by Higgins during the first half of an NFL football game against the Indianapolis Colts, Sunday, Oct. 11, 2020, in Cleveland. (AP Photo/David Richard)CLEVELAND – Bill Belichick was their coach and Nick Saban on his staff the last time Cleveland Browns were this good this early. Just three years removed from 0-16, the Browns are 4-1 for the first time since ‘94 — Belichick’s fourth season. “We needed a play to be made — and I’m greedy when it comes to that.”On the Colts' next possession, Browns safety Sheldrick Redwine, who came in while Harrison was being evaluated for a concussion, picked off Rivers. Mayfield showed patience on his 2-yard scoring pass to Hunt, which gave the Browns a 10-7 lead early in the second quarter.