Sean Koerner

Sean Koerner

2349 Posts
Sean Koerner
2349 Posts
NFL, college football, college basketball, player projections. have created team/player projection models for essentially every sport at some point
Role
Director of Predictive Analytics
Experience
20 years
Location
Los Angeles
Total Bets
3.6K
Followers
334.8K

Summary

Sean runs the predictive analytics at Action Network. From the in-game win probabilities in the award-winning Action Network app, to the DFS models on FantasyLabs, to the fantasy football rankings across the network. He also churns out fantasy/betting content for the NFL and is co-host for the Fantasy Flex pod and the betting show Convince Me

Sean creates projects for nearly every sport, from the WNBA to MLB to college hoops and everything in between.

Experience & Accolades

Sean is one of the most decorated fantasy analysts in the industry, finishing first in the FantasyPros In-Season Accuracy standings in 2023 – which measures almost all fantasy football analysts on their in-season projections over the course of the season. You can read more about their methodology here. He also won the in-season ranking title in 2015, 2016 and 2017. This past season, he not only finished first overall, but was the No. 1 ranker out of 180+ entrants in running back, wide receiver and kicker rankings. He was top 10 in quarterbacks and tight ends, as well.

His 2023 performance was arguably the best in the contest’s history:

  • It was a record fourth No. 1 finish in the accuracy contest
  • He was the first expert in history to be No. 1 at multiple positions (RB + WR)
  • He was the expert to finish top 10 at every position

Sean started to become obsessed with sports betting & fantasy football ever since his father took him to Las Vegas for his annual fantasy football draft (at 8 years old). Sean started trying to project teams/players ever since and almost every action/decision he's made since has led him to where he is today. He began betting 20 years ago and began his sports betting/fantasy sports career as soon as he graduated from college in 2007. Prior to joining Action in 2018, he worked for MGM, RotoHog/FastPoint games, Bloomberg Sports, STATS.

Sean began his betting career in college by building sports betting models. He eventually turned into a bookie in college before moving to Vegas to work at Excalibur Sportsbook as a supervisor. He decided to move back to California to begin a career in fantasy sports/betting at RotoHog as a product manager. That was when he began entering his season-long fantasy projections into the FSTA contests and won the award for most accurate season-long NFL & MLB projections 2-3 times each.

He then moved to NY to work for Bloomberg Sports as a product manager and Head of Projections. They were eventually acquired by STATS where he maintained the same role as a product manager. That was when he began entering his weekly NFL rankings into the FantasyPros accuracy contest and won first place 3 years in a row from 2015-2017. He joined Action Network in 2018.

Education

Sean has a BA in Psychology from Long Beach State and took multiple advanced stats classes. He spent most of his time in the library reading stats/sports betting books creating prediction models and using them to bet on various sports (MLB, NFL, NBA, WNBA, etc.).

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Sean Koerner's Picks

Today
Greg Olsen recently pointed out that teams should not match up against Seattle’s heavy personnel on early downs with base because the Seahawks were using it to set up the pass. The Rams countered that last week and Sam Darnold had his worst game of the season, throwing 4 interceptions. I think it makes sense for Seattle to respond with a more run heavy game plan here, and this matchup supports it because the Titans have one of the worst run defenses in the league, ranking 30th in DVOA. As nearly 14 point favorites, this is the exact type of spot where Seattle should lean on the run, shorten the game, and put Darnold in fewer obvious passing situations. Darnold also tends to make his completions count since he ranks 2nd in the league with 63.5 yards per game on throws 20+ yards downfield. The Titans have allowed the 4th highest yards per attempt on passes 20+ yards downfield. Those deeper attempts are great for this market because they are lower percentage throws, and when they are completed, they move the ball further down the field which lowers play volume, increases the likelihood of scoring, and helps create more run heavy scripts. So the game plan we want is pretty simple. Seattle runs the ball early and often, and when they take shots, they are deep ones. That combination gives Darnold fewer total attempts and fewer short, easy completions. I’m projecting him closer to 18.7 completions with around a 59% chance he stays under 19.5.
204
23
Last week was the perfect storm for Tracy to rack up a 19/88/0 rushing line. The Giants had a -18.3% PROE which was the 3rd most run heavy called game of the entire season. It was the first post-Brian Daboll game with Mike Kafka calling plays and they were able to keep it close before eventually losing 27-20, but they dominated time of possession at close to 36 minutes and ran 69 plays. That is extremely unlikely to repeat here. Against the Lions, it’s a completely different script. Detroit should control time of possession, get out to a big enough lead, and force the Giants to be more pass heavy. It makes perfect sense to fade the Giants run game here and Tracy specifically is a good sell-high spot off a 19 carry game. Tracy continues to concede short yardage and goal line work to Devin Singletary which really lowers his floor in this market. He needs the Giants to stay close and maintain an extreme run heavy approach. I do think Kafka will keep them more run leaning going forward, but something closer to a -2 to -3% PROE, not the extreme we saw last week. They are also expected to trail at a +18% higher rate than their season average which pushes them toward more passing. I’m projecting Tracy closer to 12.1 carries with around a 65% chance to stay under 13.5. I was already prepared to take under 12.5 at around a 56% chance, so getting an extra attempt (even at -132) is a bonus. A more pass heavy script, plus Devin Singletary eating into early down, short yardage, and goal line snaps, lowers Tracy’s ceiling and makes this a strong sell-high spot.
157
26
Metchie has bounced around over the past couple of seasons but is still just 25 years old and a former 2nd-round pick (2022). He may have finally found a real opportunity with the Jets, where he’s positioned to be a featured receiver the rest of the year. He quietly drew targets on 31% of his routes in limited snaps with the Eagles earlier this season, which is elite territory for any WR. Since joining New York, he’s played in two games where Justin Fields completed only 6 and 15 passes, leaving little chance for anyone to produce. This week, it’ll be Tyrod Taylor under center and a much more pass-heavy game script against the Ravens. Metchie’s routes run rate jumped to 73% last week, and he’s essentially filling the Garrett Wilson role while Wilson remains on IR. Tyrod has funneled targets to that spot in his two starts this season.. connecting with Wilson for 10/84/1 in Week 3, and when Wilson was out in Week 7, Tyler Johnson filled in and went 3/60/0 in that same role. Given Metchie’s low aDOT (4.8) and high catch-rate role, his reception prop looks stronger than his yardage prop. I have him projected closer to 3.2 receptions with about a 61% chance to clear 2.5.
243
26
I was a little surprised to see Sanders’ rush prop this high for his first start. It is a tricky projection because we are still trying to figure out what his scramble rate will look like in the NFL. He scrambled at a 7% rate at Colorado last year, a 5.1% rate in preseason on 39 dropbacks, and a 14% rate last week when he scrambled 3 times on 21 dropbacks for 16 yards. If he settles in as a 10%+ scramble rate QB, he will blow past this number. I still think he ends up more in the 5-7% range as he is more of a pocket passer and usually looks to throw rather than pull it down. Last week he was thrown into the fire and was under pressure on a ridiculous 52.4% of his dropbacks, so it is not shocking that he scrambled more. Now he has a full week to prepare, and this is a game where the Browns should be able to lean heavily on the run. That should naturally lower his dropback volume. He also faces a Raiders defense with the 2nd lowest pressure rate in the league, which should give him a cleaner pocket and fewer forced scrambles. I still think we see 2-3 scrambles, but I am not expecting many designed runs for him (if any). It is a very wide range of outcomes and not a spot you feel overly confident projecting one way or the other. But I regretted not taking Tyler Shough under 19.5 a couple of weeks ago (he is now in the 8.5 range) because he never profiled as a QB who would use his legs enough to warrant a prop in this range. Sanders looks similar in that sense. If Sanders clears this easily and shows he is actually going to be a 10%+ scramble rate QB, I will adjust my expected scramble rate and his rushing projections going forward. For now, this is a spot I want to attack early. I have his median closer to 15.5 and around a 60% chance he stays under 19.5.
170
25
He’s had a solid rookie season but 9.5 is way too high for this matchup. Carson has only cleared 10+ tackles twice this year and this is a tougher matchup for LBs as the Raiders have provided the 3rd fewest tackle opps for LBs (a theme for Geno Smith led offenses) and I’m projecting them to face ~4 fewer rush attempts. He may mix in on the occasional Bowers target but most teams stick their top CB(s) on him since he is the clear #1 target. Projecting this closer to 8.4 with around a 65% chance he stays under 9.5
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16
One of the biggest edges in the prop tool right now, but not up at FD/DK yet. I’m projecting Carter to take over most of the Demercado/passing role here
109
26
Kellen Moore has taken a very run heavy approach in his first season as Saints HC and cranked it up even more in Tyler Shough’s two starts with an average PROE of -7.5%. I’ve actually been impressed with Shough so far and think he’s an upgrade over Spencer Rattler and the market now has the Saints as 2.5 point home favorites over the Falcons. They are 2-8 and have played with the lead only 13% of the time (league worst), yet as slight favorites they are projected to play with a lead at a +31% higher rate than their season average. That is about as big of a jump as you’ll see this late in the year. It sets up a game where the Saints can lean on the run and naturally limit Shough’s dropbacks. When he does drop back, the matchup gets tougher. The Falcons have allowed the 4th fewest completions per game. They blitz at the 2nd highest rate and generate the 5th highest pressure rate. Shough has seen his completion rate fall off a ton against both the blitz and pressure, and when facing the blitz he is pushing the ball downfield at a 27% deep rate which would lead all 34 qualified QBs. His aDOT of 9.5 yards would also lead the league. So when Moore has him drop back, he is making those throws count. They are downfield, low completion rate, high-variance attempts. That is perfect for this market. You also get the usual Taysom Hill package mixing in. He will take a handful of snaps under center which means there are a handful of plays where Shough has a 0% chance to complete a pass. That lowers his floor a bit more specifically for completions. I’m projecting him closer to 17.5 completions with around a 60% chance to stay under 18.5.
185
21
Pending
Futures
Matthew Stafford o22.5-114
2025 NFL Regular Season - Total Passing TDs
0.57u
Discussed this on The Favorites
70
24
Cooper Kupp u700.5-114
2025 NFL Regular Season - Total Receiving Yards
1.14u
86
25
Javonte Williams u525.5-115
2025 NFL Regular Season - Total Rushing Yards
1.15u
48
16
Jared Verse o7.5-135
2025 NFL Regular Season - Total Sacks
1.35u
49
16
Past Performance
Yesterday0-0-00%
0.00u
Last 7 Days11-10-052%
0.21u
Last 30 Days45-31-059%
7.63u
All Time1970-1585-3155%
231.25u
Top Leagues
NFL1144-903-1955%
136.76u
MLB298-247-454%
42.72u
NCAAB262-210-355%
28.85u
WNBA147-118-355%
19.47u
NCAAF36-23-259%
6.62u
UFL5-4-056%
0.60u
Golf0-3-00%
-0.60u
NBA78-74-051%
-2.77u
Betting Highlights
Favorite Bet of All-Time
Patrick Mahomes under 30.5 rushing yards for Super Bowl LIV. He had 44 yards going into the final drive. Kneeled down 3 times for -15 yards to drop down to 29 yards and hit the under
Most Heartbreaking Bet
Max bet Jimmy Graham under 23.5 rec yards in the WC playoff game against NO in 2020. He had 6 yards heading into the final drive with the Bears down 3-21. On the final play of the game, Mitch Trubisky finds Graham in the back of the end zone for an insane one handed grab for a 19-yard garbage time TD. Graham finished with 25 yards and I'm still tilted by this. Side note: Stuckey was on this prop with me.
Specialties
  • NFL
  • College football
  • College basketball
  • Player projections
  • Have created team/player projection models for essentially every sport at some point