Chargers had a 13 point lead and possession with 6:50 left

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Win probabilities heading into the 4th quarter:<br><br>Week 1 against KC: 99.4% (L)<br><br>Week 3 against IND: 80.4% (L)<br><br>Week 4 against NO: 98.5% (L)</p>&mdash; &#9889;&#65039;#NOvSD (1-2)&#9889;&#65039; (@ChargersLegion) <a href="https://twitter.com/ChargersLegion/status/782736099005399040">October 3, 2016</a></blockquote>
<script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>
fairly certain it was above 99% after the Saints punted with < 7:00 left

99.8%, actually!

New Orleans Saints at San Diego Chargers - October 2nd, 2016 | Pro-Football-Reference.com