Post columnist Mark Cannizzaro breaks down each team and every division in the NFC as part of our2019 NFL preview:

1. Kansas City Chiefs

Coach: Andy Reid

2018 record: 12-4

O/U wins: 10 ½

Key additions: S Tyrann Mathieu, DE Frank Clark, WR Mecole Hardman, RB LeSean McCoy

Key losses: DE Justin Houston, RB Spencer Ware, WR Chris Conley, S Eric Berry

First-and-goal: In his first season as a starter, QB Patrick Mahomes completed 66 percent of his passes for 5,097 yards, 52 TDs and just 12 INTs and won the MVP. He has new toys in rookies Mecole Hardman, a second-round wideout from Georgia who runs a 4.33 40, and RB Darwin Thompson. And DE Frank Clark brings 14 sacks with him from Seattle.

Fourth-and-long: Mahomes relied on TE Travis Kelce and WR Tyreek Hill, who combined for 190 catches for 2,815 yards and 22 TDs. But no other receiver had more than 40 catches. Can Hill be trusted based on his off-the field issues, which have clouded his career? How much can Reid get out of WR Sammy Watkins, who hasn’t had a 1,000-yard season since 2015 in Buffalo, and RB LeSean McCoy, who at age 31 signed with his ex-Eagles coach after getting cut by the Bills?

Cann’s call: 13-3. It begins and ends for the Chiefs with Mahomes, who was a revelation last season, becoming one of the best players in the league, if not the best.

2. San Diego Chargers

Coach: Anthony Lynn

2018 record: 12-4

O/U wins: 10

see also The NFL’s 50 most fascinating people in 2019 1. Patrick Mahomes, Chiefs QB (2018: 22): Must-watch television, a... LB Thomas Davis, QB Tyrod Taylor, DT Jerry Tillery, S Nasir Adderley, QB Easton Stick

Key losses: WR Tyrell Williams, S Jahleel Addae, TE Antonio Gates

First-and-goal: The Chargers still have QB Philip Rivers who’s in his 15th season and doesn’t appear to be slowing down. He’s 37, but threw 32 TD passes in 2018 and never has missed a regularseason game. Rivers has plenty of quality targets in WRs Keenan Allen and Mike Williams and TE Hunter Henry, who returns after missing the 2018 season.

Fourth-and-long: The contract holdout of RB Melvin Gordon, who has three consecutive season with more than 1,300 yards from scrimmage (in addition to 38 TDs), has loomed over the Chargers this summer. The other running back options include change-of-pace back Austin Ekeler and not much else. DE Joey Bosa has 28.5 sacks in 35 career games, but he has to stay healthy. He was limited to six games in 2018.

Cann’s call: 11-5. Rivers and Lynn can do great things together.

A top QB and head coach usually translates into success in the NFL (see New England).

3. Denver Broncos

Coach: Vic Fangio

2018 record: 6-10

O/U wins: 7

Key additions: QB Joe Flacco, CB Kareem Jackson, CB Bryce Callahan, TE Noah Fant, QB Drew Lock

Key losses: QB Case Keenum, S Darian Stewart, CB Bradley Roby

see also The Post's NFL expert predicts 2020 playoffs, Super Bowl winner Post columnist Steve Serby looks into his crystal ball and... The Broncos’ best offensive weapon is RB Phillip Lindsay, who produced 1,278 combined yards with 10 TDs and 35 catches while averaging 15.1 touches as a rookie. He will be augmented by Royce Freeman, a 238-pound bull who had 521 yards despite a bum ankle last season. Fangio, finally a head coach after being one of the NFL’s top defensive coordinators for years, gets to scheme with LB Von Miller (14.5 sacks) and Bradley Chubb (12 sacks).

Fourth-and-long: Has John Elway, the former Broncos great, whiffed on yet another QB acquisition? Joe Flacco, who is a Super Bowl winner, is 34 and was phased out of Baltimore. Denver drafted Noah Fant, a pass-catching tight end from Iowa in the first round, but could be thin at receiver with Emmanuel Sanders (868 yards) and Courtland Sutton (704 yards) the unimposing top two returnees.

Cann’s call: 6-10. Quarterback remains an issue for the Broncos, oddly enough as it has been under Elway’s watch since Peyton Manning retired. Is Flacco the answer? Baltimore didn’t think so.

4. Oakland Raiders

Coach: Jon Gruden

2018 record: 4-12

O/U wins: 6

Key additions: WR Antonio Brown, WR Tyrell Williams, RB Josh Jacobs, TE Foster Moreau, WR Hunter Renfrow

Key losses: TE Jared Cook, RB Marshawn Lynch, WR Jordy Nelson

First-and-goal: The Raiders didn’t trade QB Derek Carr and instead tried to rebuild the offense around him. He wasn’t his best in 2018 (20 TDs and 17 turnovers), but he was drafted as a franchise quarterback for a reason, albeit not by this regime. The defense got an infusion of youth with firstrounders DE Clelin Ferrell and S Johnathan Abram.

see also Why replay could make NFL pass interference calls even messier This could get messy. The NFL’s goal was to avoid... One of the great mysteries to this NFL season is what WR Antonio Brown is going to do for — or to — the Raiders. He’s a great receiver, but also carries with him so many diva dramas and issues (the frozen foot, the helmet kerfuffle, etc.) it makes you wonder if it’s worth the bother. LB Vontaze Burfict was at times a star in Cincinnati and is still only 28, but he has quite a few fines, suspensions and injuries in his past.

Cann’s call: 5-11.

Too many moving parts for the Raiders to succeed this season.