1.  
QB  KC
Pass Att
577
Pass Yds
4733
Pass TD
41
Pass Int
15
YPA
8.2
Rush Att
53
Rush Yds
316
Rush TD
2
Rush Avg
6.0
Entering last season, the question in Kansas City was less about Mahomes' NFL aptitude than whether coach Andy Reid would truly open the offense or play it cautious with his first-year starter. Well, Reid went for broke, and the cannon-armed Mahomes made it pay off. He threw a league-high 80 passes longer than 20 yards, accounting for 13.8 percent of his attempts (most among QBs with at least 450 passes) and leading the league with 10 TDs on those throws. Mahomes also ranked second in YPA (8.8) and sixth in average target depth (9.2). Easily the MVP, he became the third QB in NFL history to pass for 5,000-plus yards and 50 touchdowns, his 8.6 TD percentage the highest since Aaron Rodgers in 2011 (9.0). Losing Kareem Hunt the last five games didn't hurt the offense much, but it could be a different story if Tyreek Hill - who at press time is banned indefinitely from all team activities because of off-field issues - doesn't return. Hill was Mahomes' favorite deep target last season, catching a league-high eight passes of 40-plus yards. Next up is the oft-injured Sammy Watkins and second-round pick Mecole Hardman. Both have questions, but both are fast enough (4.33 40 for Hardman) to stretch the field. The almost-uncoverable Travis Kelce is a constant, and the backfield is led by Damien Williams, who shined after Hunt exited, and free-agent addition Carlos Hyde. Regression is inevitable - Mahomes is not likely to outpace the No. 2 QB by 4.5 fantasy points per game again - but in Reid's offense it shouldn't be crippling, even with the likely loss of Hill.
2.  
QB  HOU
Pass Att
534
Pass Yds
4311
Pass TD
29
Pass Int
11
YPA
8.1
Rush Att
70
Rush Yds
488
Rush TD
4
Rush Avg
7.0
A year removed from an ACL tear, Watson showed no ill effect last season, finishing top 7 in completion percentage (68.3), YPA (8.2) and passer rating (103.1). He kept running too, averaging 5.6 yards per carry and scoring five touchdowns, third among quarterbacks. A weak offensive line often forced him to run, but his league-high total of 62 sacks, the most for an NFL quarterback since 2006, was also partially because he held the ball too long. For all the sacks his playing style leads to, Watson also creates frequent long gains when he dodges pass rushers rather than throwing the ball away or settling for a dump-off - his 9.2-yard average depth of target ranked seventh, and his 10 touchdowns thrown from outside the pocket were second to only Patrick Mahomes (11). And that was all accomplished with a receiving corps that couldn't stay healthy - Will Fuller, Keke Coutee, Demaryius Thomas and Bruce Ellington each played no more than seven games. The Texans are optimistic Fuller and Coutee will be healthy for Week 1, and while it still looks bad on paper, perhaps the offensive line will benefit from the addition of left tackle Tytus Howard, the 23rd overall pick in the draft. If the 23-year-old Watson takes another step this season (his completion percentage jumped 6.5 points last year), without straying too far from his aggressive instincts, he could challenge for the top spot among fantasy quarterbacks.
3.  
QB  IND
Pass Att
611
Pass Yds
4699
Pass TD
35
Pass Int
13
YPA
7.7
Rush Att
30
Rush Yds
154
Rush TD
1
Rush Avg
5.1
After missing 2017 with an injured shoulder and not throwing a football until June last year, Luck was the biggest fantasy mystery entering 2018. Those who took the risk were rewarded, and then some. Luck was easily the league's Comeback Player of the Year as he finished second in touchdown passes (39) and fifth in passing yards (4,593), joining Patrick Mahomes and Matt Ryan as the only quarterbacks to surpass 4,500 yards and 35 touchdowns. Luck also posted career highs in completion percentage (67.3) and passer rating (98.7), then led the Colts to the divisional round of the playoffs. Indianapolis didn't baby Luck either - he had a career-high 639 attempts, second only to Ben Roethlisberger's 652. And Luck's downfield passing numbers were nearly identical to those from 2016; his 15.6 YPA on attempts longer than 20 yards ranked fifth. Luck benefited from an offensive line that allowed a league-low 18 sacks, and he was pressured on just 18.4 percent of his dropbacks, fourth lowest in the league. His protection should be solid once again this year, but the biggest benefit might be an offseason spent digging deeper into second-year coach Frank Reich's offense instead of rehabbing. Luck should have more weapons this year with free-agent signing Devin Funchess and second-round pick Parris Campbell, a 6-1 wideout with 4.31 speed, joining T.Y. Hilton and an excellent tight-end duo in Eric Ebron and Jack Doyle, while Marlon Mack leads a backfield that keeps defenses honest. The only mystery with Luck this season is how high he should be drafted.
4.  
QB  GB
Pass Att
581
Pass Yds
4566
Pass TD
31
Pass Int
6
YPA
7.9
Rush Att
41
Rush Yds
244
Rush TD
2
Rush Avg
6.0
Rodgers topped 4,000 passing yards for the seventh time in his career last season, but his 25 touchdown passes were the fewest he's throw in a full campaign, as injuries, a lack of weapons and uninspired play-calling helped hand the Packers back-to-back losing seasons for the first time since 1990-91. Rodgers played with an MCL sprain and tibial plateau fracture in his left leg all year and also suffered a concussion Week 17. The injuries no doubt had an impact, as did the lack of reliable receivers behind Davante Adams, who sucked up 26 percent of the team's targets, 30 percent of receiving yards and 52 percent of receiving TDs (despite missing Week 17). Green Bay's young wide receivers were inconsistent, while tight end Jimmy Graham was consistently ineffective. Too often Rodgers was forced to simply throw the ball away, and while that helped him post an NFL-record 0.3 percent INT rate, it also led to a career-low 4.2 TD percentage and his second lowest completion percentage. His YPA ranked 17th in the league and his completion percentage (32.5) on passes longer than 20 yards ranked 21st. How much coach Mike McCarthy factored into that is debatable, but it was enough to cost him his job. In comes head coach Matt LaFleur and offensive coordinator Nathaniel Hackett to help return the 35-year-old Rodgers to MVP form. The team did not add new offensive pieces, so improvement will hinge on scheme, internal development and health. Expecting improvement in the first two is reasonable, but the latter might be the most important as injuries are starting to pile up for Rodgers.
5.  
QB  CLE
Pass Att
598
Pass Yds
4689
Pass TD
33
Pass Int
15
YPA
7.8
Rush Att
33
Rush Yds
166
Rush TD
1
Rush Avg
5.0
The No. 1 pick in last year's draft, Mayfield debuted Week 3 and took over the starting job the following week. His big break came when the Browns fired offensive coordinator Todd Haley entering Week 9, replacing him with running backs coach Freddie Kitchens. In six games under Haley, Mayfield completed 58.3 percent of his passes with 6.6 YPA and eight touchdowns. In eight games under Kitchens, those numbers jumped to 68.4 percent, 8.6 YPA and 19 TDs, sparked by success throwing the deep ball. In Weeks 9-17, on attempts longer than 20 yards, Mayfield posted a 14.7 TD percentage (2nd), 17.8 YPA (3rd) and 108.5 passer rating (6th). For the season, his 9.4-yard average depth of target ranked fifth in the league. The offseason addition of Odell Beckham Jr. could take Mayfield and the Cleveland offense to the next level this year under Kitchens, now the head coach but still the play-caller with former Buccaneers assistant Todd Monken the new offensive coordinator. Jarvis Landry returns to man the slot, with second-year man Antonio Callaway showing promise and tight end David Njoku perhaps on the verge of a breakout. Meanwhile, Kareem Hunt will join Nick Chubb and Duke Johnson in the backfield at midseason after serving an eight-game suspension. In short, Mayfield is set up for big success in Year 2.
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