After three rounds of the 2017 NFL Draft, Chargers coach Anthony Lynn joked that defense coordinator Gus Bradley might need to seek counseling. Three times the Chargers were in prime position to select a player to fit Bradley’s cover-3 defense, and three times the Chargers picked offensive players. It was just how things played out, the decision makers said. It wasn’t part of a grand scheme or necessarily a sign of things to come. No one then, and even as recently as August, could’ve definitively said Bradley wouldn’t need much help. Through the first half of the season, the team’s 3-5 record is either the fault of the offense or a testament to the defense, depending on how you want to look at it. The group has played well enough to win in all but one of its losses. Here’s how the defense has done it ... What’s working? The biggest successes on the Chargers defense are at the line of scrimmage, where the team has a decided advantage. Melvin Ingram, who this summer signed the kind of contract that could make a player fat and lazy, came into the season as motivated as ever. He got off to a dominant start, playing faster than most of the tackles unlucky enough to be asked to stop him. And, as he showed against Denver, if Ingram can’t get around a lineman, he’s strong enough to push him into the quarterback.