​Chargers quarterback Justin Herbert tries to pass over Seattle Seahawks linebacker Uchenna Nwosu (7) during the first half of the Chargers’ loss Sunday. (Lindsey Wasson / Associated Press)In a game that looked lopsided for the better part of three quarters, the Chargers did enough Sunday to scare the defending Super Bowl champions.Small victory, but at least it was something for the winless Chargers, who scored a touchdown and field goal in the fourth quarter before falling to the Seattle Seahawks, 30-23.The visitors, who trailed by 19 in the third quarter, were behind by a touchdown when they took over at their 11 with 1:42 remaining. Three plays into that against-all-odds drive, the Seahawks stripped the ball from Justin Herbert, recovered the fumble and ran out the clock.The Chargers dropped to 0-4, likely crossing the point of no return. The last time the Chargers started 0-4 was 2017, their first season back in Los Angeles.Only one team — the 1992 San Diego Chargers — made the playoffs after losing its first four games, and that Bobby Ross-coached squad won 11 of its final 12 games.Read more:Mike McDaniel blames himself for Chargers’ woes, remains confident of turnaroundThese Chargers have 13 games left, and identifying potential wins on the remaining schedule is a nearly impossible task.Remember the thought that new offensive coordinator Mike McDaniel would unlock all the potential of Herbert? Almost sounds silly now, with the way the team has stumbled and bumbled its way through the first four games.Previous little rhythm or continuity. Nowhere to go but up.Sunday was the first time the Chargers finished within a touchdown of their opponent.For much of the game, Herbert looked lost. His pass was intercepted on the first play from scrimmage and again late in the first half, when his throw landed right in the belly of linebacker Ernest Jones IV.Injuries didn’t help. All-Pro safety Derwin James Jr. was deactivated by the Chargers because of a hamstring injury, and the team subsequently lost No. 1 receiver Ladd McConkey (foot) and right tackle Joe Alt (neck) for the second half. In the fourth quarter, left tackle Rashawn Slater lay for several moments on the turf and was examined by medical staff before rising to his feet and walking gingerly to the sideline with an ankle injury.Herbert took a beating. He was sacked four times, and the Seahawks were flagged twice for roughing the passer. He had three turnovers. His toughness was not in question, though, not after some of those crushing hits.At least last season the Chargers could point to a specific positional breakdown. Their offensive line was a disaster. This year, nothing is working well — although the defense did turn in a gem for three quarters in the Week 3 loss at Buffalo, including five takeaways.It has been a disastrous and unfamiliar start for Chargers coach Jim Harbaugh, who before this season had never lost his first two games, either in college or the pros.As unpleasant