ATS Meaning in Betting: Against the Spread, Covers and Records

ATS stands for against the spread. When a stats page says a team is 10-4 ATS, it is counting how many times the team beat the point spread, not how many games it won. A favourite can win almost every week and still have a poor ATS record, while an underdog that loses most of its games can be one of the most profitable teams to have backed.

This guide covers what covering means, how an ATS record is built and written, why the standard -110 price means you have to be right 52.38% of the time, and why most of the ATS trends quoted before a game are weaker than they look. It also decodes the rest of the shorthand printed next to a line, from SU and O/U to PK and laying points. For the mechanics of spreads and handicaps themselves, including Asian and European lines in football (soccer), see our point spread and handicap guide.

What ATS means and how a team covers

Every game with a point spread has two results: the real score and the score after the spread is applied. The ATS result is the second one. A team covers when it comes out ahead once the spread is applied, and fails to cover when it does not.

Three outcomes for the same hypothetical line, Buffalo -4.5 against Miami +4.5:

• Buffalo win 27-20. The margin is 7, more than 4.5, so Buffalo cover. For that week Buffalo are 1-0 straight up and 1-0 ATS, Miami 0-1 on both.
• Buffalo win 23-20. The margin is 3, less than 4.5, so Miami cover. Buffalo are 1-0 straight up but 0-1 ATS, and Miami lost the game yet went 1-0 ATS.
• Miami win 20-17. Miami cover with room to spare, because an underdog that wins outright always beats a plus spread.

For a favourite, every cover is also a win, but plenty of wins are not covers. For an underdog it runs the other way: every win is a cover, and some defeats are covers too. That is the point of the number: it strips out how good a team is and measures how it did against what the market expected.

ATS records are quoted most in the NFL, the NBA and college football and basketball. In baseball and ice hockey the handicap is almost always 1.5, so you see run line and puck line records instead. The NFL betting guide and the NBA betting guide cover how spreads behave in each league.

ATS record vs straight-up record

A straight-up (SU) record is the ordinary win-loss record. An ATS record counts the same games a second time, settled against the spread. The two can drift a long way apart over a season because the spread is set to make each game close to a coin flip on the margin, however good the team is. A strong team is asked to win by more every week, and a weak team is handed more points.

The season below belongs to a made-up NFL team over a 17-game regular season. The spread is shown from that team's side and the score is listed with that team first.

Worked example: a 12-5 team that went 8-8-1 ATS

• Game 1: -3.5, won 24-17 (by 7). SU win, ATS win.
• Game 2: -6.5, won 20-16 (by 4). SU win, ATS loss.
• Game 3: +2.5, won 23-20. SU win, ATS win.
• Game 4: -7, won 31-24 (by 7). SU win, ATS push.
• Game 5: -4.5, lost 17-20. SU loss, ATS loss.
• Game 6: -9.5, won 34-13 (by 21). SU win, ATS win.
• Game 7: -3, won 27-26 (by 1). SU win, ATS loss.
• Game 8: +3.5, lost 21-24 (by 3). SU loss, ATS win.
• Game 9: -10.5, won 28-20 (by 8). SU win, ATS loss.
• Game 10: -2.5, won 30-10 (by 20). SU win, ATS win.
• Game 11: -6, won 24-21 (by 3). SU win, ATS loss.
• Game 12: +1.5, lost 13-27. SU loss, ATS loss.
• Game 13: -5.5, won 26-17 (by 9). SU win, ATS win.
• Game 14: -7.5, won 20-14 (by 6). SU win, ATS loss.
• Game 15: -3, won 23-16 (by 7). SU win, ATS win.
• Game 16: +4, lost 17-20 (by 3). SU loss, ATS win.
• Game 17: PK, lost 10-16. SU loss, ATS loss.

Add it up and the team finished 12-5 straight up but 8-8-1 against the spread. Only six of the 12 wins came by more than the number (games 1, 3, 6, 10, 13 and 15), five wins fell short of it, and the 7-point win as a 7-point favourite in game 4 was a push. Two of the eight covers came in defeats as an underdog, games 8 and 16. Games 5 and 17 could never have covered once they were lost, because a favourite or a pick'em team that loses the game always loses the spread bet too.

Now put money on it. Backing this team every week at -110 with $110 a game wins $100 eight times and loses $110 eight times, and the push is refunded: $800 - $880 = -$80. Following one of the best teams in the league all season lost money. Opposing it every week lost the same $80, because the other side of every game had the mirror record of 8-8-1 at the same price. That gap is the bookmaker's margin, and it is the reason the next two sections matter.

Pushes and how ATS records are written

An ATS record is written wins, losses, pushes. 9-6-1 ATS means nine covers, six failures to cover and one game that landed exactly on the number. Pushes can only happen on whole-number spreads such as -3, -7 or PK. A line of -3.5 always produces a winner and a loser. In the NFL, where margins of 3 and 7 come up often, a whole-number spread is a real push risk, which is why the half point either side of those numbers is priced so carefully.

Cover percentage is normally worked out from decided games only, so 9-6-1 is 9 ÷ (9 + 6) = 60%. Some sites divide by every game played instead, which gives 9 ÷ 16 = 56.3%. Check which method a table uses before you compare two sources. In money terms, 9-6-1 at -110 with $110 on every game is 9 × $100 = $900 won and 6 × $110 = $660 lost, a profit of $240 from $1,760 staked across 16 games, with the pushed $110 returned untouched.

The line used matters as much as the arithmetic. Most published ATS records use the closing line, and closing lines differ slightly between sportsbooks, so two websites can show the same team a game apart. If a team closed at -3 and won by 3, it pushed against the close, but anyone who took it at -2.5 earlier in the week won. Your own ATS record is the one at the numbers you actually took, and the gap between your number and the closing number is what closing line value measures.

Why -110 needs 52.38% to break even

Standard spread bets are priced at -110 on both sides. In American odds that means you risk $110 to win $100, so a winning $110 bet returns $210. In decimal odds that is 1.91, and in fractional odds 10/11. Each loss costs more than each win earns, so your winners have to cover that difference before you make anything.

Set the profit from wins equal to the cost of losses. If p is your win rate, p × 100 = (1 - p) × 110, which gives p = 110 ÷ 210 = 0.5238. You need to win 52.38% of decided bets just to break even. Here is what 100 bets of $110 look like at different records:

• 50-50: 50 × $100 - 50 × $110 = -$500
• 52-48: $5,200 - $5,280 = -$80
• 53-47: $5,300 - $5,170 = +$130
• 55-45: $5,500 - $4,950 = +$550, a 5% return on $11,000 staked

The break-even rate moves with the price. At -105 it is 105 ÷ 205 = 51.22%, at -115 it is 115 ÷ 215 = 53.49%, and at -120 it is 120 ÷ 220 = 54.55%. Over a season of spread bets, finding -105 instead of -110 on the same number is worth more than most bettors assume. Our implied probability guide shows the conversion for any price.

From the sportsbook's side, if it takes $110 on each team it holds $220 and pays $210 to the winner, keeping $10, or 4.55% of the money wagered. The two -110 prices add up to 52.38% + 52.38% = 104.76% implied probability, and the 4.76% above 100% is the overround. A no-vig calculator removes it and shows each side as the 50% the market really expects.

ATS trends and why small samples mislead

Game previews are full of lines like "8-2 ATS in their last 10 road games" or "4-11 ATS as a home favourite since 2023". They are easy to produce and hard to use, for three reasons.

The first is that chance alone produces them. If every team were a pure 50% proposition against the spread, the probability of going 8-2 or better over 10 games would be 56 ÷ 1,024, about 5.5%. That sounds rare until you count the splits: home and away, favourite and underdog, after a win or a loss, division games. Track 200 ten-game splits across a league and around 11 of them will show 8-2 or better by luck. Somebody will find those 11 and print them.

The second is that a full season is still a small sample. Over 17 games, a coin-flip team's cover count has a standard deviation of about two games, and the chance of going 11-6 ATS or better with no edge at all is 21,778 ÷ 131,072, or 16.6%. In a 32-team league that is around five teams a year posting a strong-looking record by luck, before anyone has done anything clever.

The third is that the market adjusts. A team that keeps covering gets bigger spreads, and a team that keeps failing gets more points. Last season's ATS record is largely built into this season's lines, which is one reason a strong ATS run rarely carries over cleanly.

Sample size changes the picture. Over 1,000 bets, a 50% bettor's win rate has a standard deviation of about 1.6 percentage points, so 55% is hard to put down to luck. Over 20 bets it is about 11 points, so 60% tells you almost nothing. A trend deserves a second look only when there is a sporting reason behind it that the line may not reflect, such as a new quarterback or a change of coach, and even then the reason is what you are betting on, not the record.

Betting board shorthand: SU, O/U, ML, PK and more

ATS rarely appears on its own. A typical NFL board might read Bills -3 (-110), Dolphins +3 (-110), O/U 47.5, ML Bills -150, Dolphins +130. Here is the rest of the shorthand you will meet on odds screens, team pages and stats tables.

• SU (straight up): the plain result, who won the game. A 12-5 SU record is the normal win-loss record.
• O/U (over/under): the total points market. An O/U record such as 10-6-1 usually lists overs first, then unders, then pushes, but stats sites differ, so read the column header.
• ML (moneyline): a bet on the winner with no spread, priced in American odds such as -150 or +130. The moneyline guide explains how these prices work.
• PK, pick or pick'em: a spread of zero. Neither team gets points, so whoever wins the game wins the bet, and a tie is a push. A PK spread at -110 on each side costs the same as any other spread bet.
• Juice or vig: the bookmaker's commission built into the price. Reduced juice means a cheaper price than the standard, such as -105.
• -110: the standard price on spreads and totals, risking $110 to win $100. Check the bet slip, since boards often omit it.
• Laying points: backing the favourite. You lay 7 when you bet a team at -7. Taking points: backing the underdog, as in taking the 7 at +7.
• The hook: the half point. Three and the hook means 3.5, and buying the hook means paying a worse price to move the line half a point.
• Chalk and dog: the favourite and the underdog.
• Backdoor cover: an underdog scoring late points that do not change the result but get it inside the spread. The game was decided; the bet was not.

For anything not listed here, the betting glossary covers the wider vocabulary.

Before you bet on an ATS trend

Run through this list whenever a preview hands you a record and a conclusion in the same sentence.

• Count the games. A ten-game split is close to meaningless, and even one full season is a small sample.
• Assume the trend was picked out of many splits, because it almost always was.
• Look for a sporting reason, such as a coaching change, a new quarterback or a change in style. A record on its own is not a reason.
• Check which line the record was measured against, and compare it with the number you can get now.
• Work out what the price demands: 52.38% at -110, 53.49% at -115.
• Keep your own ATS record bet by bet, with the line and price you took. It is the only ATS record that measures you, and our bankroll management guide explains how to log it alongside your stakes.
• Decide the stake before you look at the board, and keep it to money you can afford to lose.

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