How to Bet on the Preseason: NFL and NBA Strategy
Preseason betting gets overlooked by most recreational bettors, which is exactly why it deserves a closer look. The casual money thins out, sportsbooks adjust their approach, and the conditions that create sharp edges in the regular season work differently here. If you understand what makes preseason games unique, you can avoid the traps that catch most bettors and identify spots where the lines are genuinely beatable.
Why Preseason Betting Is a Different Animal
In the regular season, handicappers work with a relatively stable foundation: established rosters, known coaching tendencies, recent game tape, and meaningful motivation. Preseason strips most of that away.
Coaches use these games to evaluate depth, experiment with schemes, and protect their starters. A team might run its first-team offense for one series or three quarters depending on the week, the opponent, and injury considerations heading into the opener. That variability makes traditional handicapping unreliable.
Sportsbooks know this. Preseason lines are set with less information and often carry more vig to compensate. The implied probability baked into those lines can rest on shakier ground than usual, on both sides.
The Roster Volatility Problem
NFL and NBA rosters during preseason are fluid in ways they never are during the regular season. In the NFL, 90-man rosters get trimmed to 53. The players competing for roster spots, not playoff seeding, are the ones actually deciding the outcome of most preseason games. A backup quarterback's ability to lead a two-minute drill in August has nothing to do with how sharp the spread was for last year's Week 10 matchup.
In the NBA, preseason rosters include two-way players, Exhibit 10 guys, and recent draft picks. Stars routinely sit out or play limited minutes while coaching staffs evaluate bubble players. A team that looks healthy and competitive on paper might send out a rotation that bears little resemblance to its regular-season lineup.
This roster volatility creates a real problem for bettors who handicap preseason games the same way they would a November matchup. The team you are betting on and the team that actually takes the court or field are sometimes quite different.
What Sportsbooks Get Right (and Wrong) in the Preseason
Sportsbooks set preseason lines largely based on public perception of franchise quality, recent regular-season records, and a rough estimate of how much playing time the starters will see. That approach is reasonable, but it does leave gaps.
The inefficiencies tend to appear in a few specific places:
Public favorite bias. Casual bettors still gravitate toward recognizable teams even in preseason. If the Cowboys or Lakers are playing, public money often tilts the line, even though the outcome has almost nothing to do with how good those franchises are in a given year.
Coaching matchups. Some head coaches are transparent about their preseason approach, others are not. A coach known to play his starters deep into the third preseason game may give his team a meaningful edge against a coach pulling starters in the second quarter. This information is available but takes real effort to find and process.
Backup and depth markets. In the NFL especially, the third and fourth preseason games often hinge entirely on players fighting for roster spots. These are the guys with the most to prove, and they tend to play with more urgency than veterans who have their contracts locked up. Lines that do not account for this can create value on underdogs with stronger depth.
A Practical NFL Example
Say it is the third preseason game of the summer. Team A is a Super Bowl contender, Team B is rebuilding. Team A is a 4-point favorite. The public sees the brand name and backs the favorite.
But Team A's head coach has gone on record saying he plans to pull his starters at halftime. Team B's coach has said his backups will play the full second half and needs to see how his depth handles extended reps. If Team B's backup quarterback is a genuine roster candidate and the depth is competitive, that 4-point spread is likely not pricing in the actual lineup that will play the majority of the game.
This is not a guaranteed edge. It is the kind of research that separates disciplined preseason bettors from those picking teams by name recognition.
How to Bet on the Preseason Using Line Movement
Line movement during the preseason can be noisier than in the regular season. With less sharp money in the market and books more willing to adjust off moderate action, a line shift does not always carry the same signal it would in October.
That said, significant movement still matters. If a line opens at pick'em and moves to 3 in either direction before tip or kickoff, it is worth understanding why. Injury news, lineup announcements, or sharp positioning can all drive preseason movement.
Line History lets you track 30 days of line movement across more than 100 sportsbooks. Checking where a preseason line opened, how it has moved, and whether that movement aligns with any roster or lineup news from that period can give you useful context before you place a bet.
NBA Preseason: The Load Management Factor
The NBA preseason adds a layer the NFL does not face to the same degree: load management. Rest and health maintenance are explicitly built into most NBA teams' preseason schedules. Stars may play a handful of minutes, or none at all.
This makes the totals market especially soft at times. If neither team plans to play its primary offensive options for more than a quarter, scoring will likely drop, but sportsbooks do not always set preseason totals low enough to reflect that. Looking for unders in early preseason games when coaches are being cautious with their rotations can be a reasonable angle. Always check official lineup reports as close to tip as possible before acting.
You can also check the NBA odds page on Line Whale, which shows live lines across books and makes it easy to compare preseason totals priced differently between sportsbooks.
Sizing Your Bets Appropriately
Preseason involves more uncertainty than any other point on the calendar. Your bet sizing should reflect the added variance.
The Kelly Criterion Calculator helps you find an optimal bet size based on your assessed win probability, the available odds, and your bankroll. In preseason, where your edge estimate is inherently less reliable, a fractional Kelly approach makes sense. If the calculator suggests a full Kelly bet of 4% of your bankroll, consider betting 1-2% instead to account for the higher uncertainty in your probability estimate.
Keep individual bets smaller and treat any edge as more tentative than it would be in Week 10 of the regular season.
Key Takeaways
- Preseason games are decided by backups and depth players, not the stars you associate with each team. Handicap accordingly.
- Public perception of franchise quality drives a lot of preseason line movement, creating spots where underdogs are underpriced.
- Research coaching tendencies around playing time. Coaches who play starters longer hold a meaningful edge over those who do not.
- NBA preseason totals can be soft early in the calendar when load management is at its peak.
- Use line movement as context, not confirmation. Check how a line has moved and whether it aligns with lineup news before you act.
- Keep bet sizes smaller in preseason. The uncertainty is higher, and your edge estimates deserve more skepticism than usual.