The Marlins are 13-13, which isn’t bad. But their “expected” record based on runs scored and allowed is 9-17, which is in fact bad. This is largely because they’ve lost games 11-1, 15-3 and 11-0, which accounts for 33 runs of their -38 run differential.
On the other hand, they rank 28th in runs scored with just 85, or 3.3 per game. Thus if the Cubs can pitch well this weekend, they should win some games. (Comparison point: The Cubs have scored 40 more runs, 135 total, in two fewer games.)
For more on the Marlins, here’s Ely Sussman, managing editor of our SB Nation Marlins site Fish Stripes.