Not only are the Marlins not walkovers, but for the last 6 weeks or so they have been one of the best teams in MLB.
Since hitting their low water mark of 25-41 on June 11, the Marlins have gone 23-12. Only the Brewers astounding 25-8 is better during that period. That 23-12 record is the same as the record of the Blue Jays who have used their hot streak to race past the Yankees, who have been 15-21.
The next best records in the NL during that period belong to the Phillies, Cubs, and Dodgers who all went 19-15, 3 1/2 games worse than the Marlins.
In their last 9 series the Marlins have won 7 and split 1 four game series. Their only series loss was to the Brewers, who managed to win 2 of 3 close, hard fought games.
This figures to be another tough series. The Brewers winning 2 of 3 should be considered a positive.