Sean Koerner

Sean Koerner

2336 Posts
Sean Koerner
2336 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
3.5K
Followers
321.1K

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
Jones is having an MVP-type season on his new team, but last week was his first real flop, throwing 3 picks in a 27-20 loss to the Steelers. I expect him to bounce back here, which should let the Colts lean more on Jonathan Taylor and the run game, helping this prop. The Falcons blitz at the highest rate in the league (46%), and Jones’ completion rate drops from 76% against 4 or fewer rushers to 55% against the blitz, so we should see more incompletions from him here. The Falcons have also allowed the fewest completions per game (16.5) and have yet to allow a QB to complete 21+ passes this season. This will be just Jones’ 3rd outdoor game of the year, and with this one being played in Germany where it should be fairly chilly, his expected completion rate should dip a bit compared to if this were played in a dome environment in Indy or Atlanta. I’m projecting him closer to 20.4 completions with around a 59% chance to stay under 21.5. People hate betting unders because they feel like there’s nothing to root for. That’s not really true. Here, we’re rooting for Jonathan Taylor to have a big game on the ground, Jones scrambles, quick TD drives, and long, clock-killing possessions from Atlanta. The people who think this is just about sitting there puckered up every time Jones drops back rooting for an incompletion are making it miserable on themselves lol. Early completions are fine too if they help the Colts build a lead and lean on the run later.
281
36
Allen has only cleared this number in 3 of 8 games, and this sets up as another spot where I’m not expecting him to lean on his legs much. The Bills should be able to build a comfortable lead and lean on James Cook and the run game, keeping Allen from taking unnecessary hits in what looks like a low-leverage matchup. He’s usually good for one designed run, and there’s always the risk of 1–2 kneel-downs at the end (the main threat to this prop). But as we’ve seen the past couple seasons, when the Bills are up big, they’re quick to hand garbage time to Mitch Trubisky, who often takes those kneels instead. I’m also projecting a lower scramble rate than his 9.4% season mark. He’s scrambled on just 3.7% of dropbacks vs Cover 2 (Miami plays it a league-high 30% of the time) and only 3.6% vs the blitz (the Dolphins blitz at the 4th-highest rate). Combine that with Miami’s weakened pass rush (Jaelan Phillips was traded (their top pass rusher), Chop Robinson is doubtful, and Matthew Judon (likely has to step up in Chop’s place) has posted a career-low 6.1% pressure rate) and Allen should have one of his cleaner pockets of the year. That setup limits how often he’ll need to take off and run. I’m projecting him around 5.8 rush attempts with about a 63% chance to stay under 6.5.
257
29
Caleb has cleared 280+ passing yards in back-to-back games, so I think his market is a bit inflated here because of it. This is a matchup against the Giants, who are more of a run funnel, where I expect Chicago to lean on the run more.. especially with Kyle Monangai looking great last week in his first start. I’m simply expecting his volume to be down in this spot. This was a prop I had circled to dig into during my Fri/Sat projection sweep, but with the weather forecast looking ugly and both Odunze and Moore banged up and limited in practice, I wanted to lock it in early at this number. I’m projecting him closer to 220 yards with around a 60% chance to stay under 232.5. A lot can change before kickoff, but most of that uncertainty points toward this line dropping once I run my full process later in the week.
230
39
Proj closer to 24.5 with Tet expected to play now Edit: should say u31.5
165
21
Taylor has cleared this in back-to-back games and was the clear No. 1 target with 13 targets over that stretch, but that was also with Garrett Wilson out. With Wilson expected to return this week, Taylor should slide back to being the No. 2 target. This is also a game where I expect the Jets to lean on the run more. As 1.5-point underdogs, they’re projected to trail at a 31% lower rate than their season average, meaning they should be able to lean on the run at a higher rate here. It’s also a much tougher matchup for Taylor. The Browns use man coverage at the highest rate in the league, and his yards per route run drops from 1.12 vs zone to just 0.47 vs man. They run Cover 1 on a league-high 35% of snaps, and Taylor has a brutal -0.03 yards per route run across 30 routes against it. The Browns aren’t going to let him sit down in open zones like he’s been able to for a lot of his targets and he’ll likely have a defender glued to him on most routes, and that usually leads to Fields either finding another option or taking off to run. The Jets also just added AD Mitchell and John Metchie III, who could chip away at his target share as they get more involved. I’m projecting him closer to 24 yards with about a 64% chance to stay under 29.5
162
28
The Patriots WR room is a bit tricky to project with Kayshon Boutte out, but last week we saw rookie Kyle Williams essentially take over Boutte’s role one-for-one. Demario Douglas has also been playing too well to keep his routes run rate capped around 30–40%, so I expect his playing time to climb as well. All of that movement likely leaves Hollins around a 55-60% routes run rate (maybe lower) and I think the market is overrating how much Boutte’s absence helps him. Any additional snaps for Douglas should either cut into Hollins’ playing time or his target share (Douglas has commanded a way higher target rate than Boutte). He’s also been running a bit lucky on efficiency, catching 87% of his targets despite a 10-yard average depth of target. His expected catch rate is closer to 67%, so he’s due for some regression the market isn’t pricing in. I’m projecting him closer to 2.2 receptions, with roughly a 60% chance to stay under 2.5.
207
24
Starks has played well in his rookie season, averaging 6.1 tackles per game and clearing this number in 4 of 8 games. However, he’s gone under in three straight since the Ravens traded for Alohi Gilman, which has shifted Starks’ role. Since that move, his box alignment rate is down about 4%, while Kyle Hamilton has lined up in the box at a career-high rate over that same stretch..lining up in the box at a 50%+ rate in 3 straight games, a career high. That shift alone eats into Starks’ tackle chances. He’s also more dependent on tackle opportunities from completed passes as a result (since the shift in usage with Gilman in the mix, his tackle rate on rush attempts has plummeted), and the Ravens have faced 24.8 completions per game this year. But JJ McCarthy’s completion prop is just 19.5, so we could see around 5 fewer tackle chances through the air, which directly hurts Starks’ expected output. On top of that, the Vikings have been the single worst team in the league in terms of providing tackle opportunities to opposing safeties. Starks has had a pretty soft schedule for safeties so far, and this will be his toughest matchup yet..just the third team he’s faced that ranks below average in tackle opportunities for his position. I’m projecting him closer to 4.8 tackles, with around a 64% chance to stay under 5.5.
99
19
Pending
Projecting this closer to 17.5 with around a 60% chance he stays under 18.5
175
24
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 Days13-6-068%
4.32u
Last 30 Days49-31-061%
10.13u
All Time1950-1568-3155%
230.05u
Top Leagues
NFL1124-889-1955%
133.79u
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
NBA78-71-052%
-1.01u
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