How it happened: Jake Arrieta tossed six shutout innings, allowing just three hits while striking out seven and walking none. Henderson Alvarez matched Arrieta pitch for pitch until things went south in the sixth. Starlin Castro ripped a one-out double into the left-center gap. Luis Valbuena follwed with a groundball to first baseman Garrett Jones. Jones’ toss to Alvarez pulled the pitcher off the bag and, in the process, ended up injuring the pitcher's left arm and ending his day prematurely. Pitcher Dan Jennings came in and promptly gave up a two-run triple to Nate Schierholtz to put the Cubs up 2-0. The lead was short-lived, however, as Brian Schlitter gave up a pair of run-scoring singles to J.T. Realmuto and Adeiny Hechavarria in the top of the seventh. The Cubs regained the lead in the bottom half of the inning when Valbuena drew a bases-loaded walk. Pedro Strop couldn't hold the lead, as the Marlins scored twice in the eighth on a sacrifice fly and a wild pitch to claim their first lead of the game, 4-3. Steve Cishek worked a perfect ninth to close it out for his 14th save of the season.
What it means: The Cubs’ five-game win streak was snapped, and they failed to deliver a perfect homestand as they head out on the road Monday for 10 straight games.
Outside the box: Vice president of player development and amateur scouting Jason McLeod gave some injury updates on some of the Cubs’ top prospects. Pitcher Pierce Johnson, who had been out with a hamstring injury, has been throwing in extended spring training and should return to the mound for Double-A Tennessee the next time through the rotation. Double-A pitcher C.J. Edwards' last MRI on his shoulder came back clean, and he will slowly be built back up and is expected to return to action in mid-July. Jen-Ho Tseng's shoulder is healthy, and he'll take the mound for the Kane County Cougars on Monday. Finally, right fielder Jorge Soler is taking batting practice and seeing live pitching in Arizona, but the team will take it slow with him after he suffered hamstring injuries to both legs this season.
"We're really just getting him nutrition, hydration, making sure he's properly hydrated," McLeod said. "So that one might be a little longer."