4. Arizona Diamondbacks
While the Giants and Dodgers have both gone through hot streaks this season, it still is the Diamondbacks holding onto the division lead as we are days away from the All-Star break. Much like the Reds, Arizona is a young dangerous team with a lot of young talent that has stepped up at the perfect time.
Atlanta played a toughly fought series with Arizona that concluded with a memorable Eddie Rosario walk-off grand slam. A great moment that Atlanta needed to beat a scrappy young team as well as a reminder of just how talented and fearless this group is.
Unlike Miami or even Philly (who have been given far more recent decisive losses against the Braves), both Arizona and Cincy can look back at their respective series against Atlanta and have a reason to feel they can play against this team.
While that is unlikely to be true, Arizona deserves to be in this category considering what they continue to accomplish despite having very little proven talent on their roster.