In retrospect, the Los Angeles Dodgers’ 6-5 loss to the Miami Marlins on May 16 was probably the low point of their 2018 season. It was the Dodgers’ sixth consecutive defeat and their ninth in 10; it dropped their overall record to 16-26, then only the fourth-best in their division; and it brought their playoff odds to a season low of 22 percent. For a team that had won 473 regular-season games over the previous five seasons (the most in baseball during that period), came within a game of winning the World Series last year and was expected to waltz to a sixth consecutive division crown this year, the season’s ugly start was hard to understand or explain.