Early NFL odds often start out shaky—lines can swing from -3 to -4.5 or...

https://mill-wiki.win/index.php/How_Much_Does_Weather_Matter_in_Early_Season_NFL_Betting%3F

Early NFL odds often start out shaky—lines can swing from -3 to -4.5 or moneylines from +155 to +135 as info firms up. Rushing to bet early can cost you value