By Frank Taddeo This four-team teaser bet offers a healthy return at +230. View the original article to see embedded media. Through seven weeks of the 2022 NFL season, underdogs continue to lead the way, posting a 60-45-3 (55.6 percent) record against the spread (ATS). Do you need any more proof of how unpredictable NFL games are this season? Over the last two weeks, Tampa Bay (-13.5; -9.5), the Chargers (-8), New England (-8.5), and Green Bay (-7.5) have lost outright, knocking out the majority of entrants in survivor pools. Sharp bettors in Vegas continue to heavily invest in teaser wagers, …