Rapid Reaction: Rockies 13, Cubs 4

DENVER -- The sixth inning was a mile-high meltdown for the Chicago Cubs, and the seventh wasn’t much better. Here's a quick look at their 13-4 loss to the Colorado Rockies on Wednesday night.

How it happened: Jake Arrieta (6-3, 2.80 ERA) gave up seven hits, allowed five runs and couldn’t record an out in the bottom of the sixth inning before he was finally asked to leave. The Rockies eventually scored six in the inning to go up 11-4, a lead not even the worst relief staff in baseball could blow.

What it means: The Cubs couldn't clinch their second series win against the Rockies in as many weeks, nor could they clinch their third consecutive series. A lot of that is because of Arrieta, who fell back to earth on Wednesday. At the hitter’s heaven that is Coors Field, the 28-year-old righty gave up nine earned runs and watched his ERA sky .69 points.

Baez watch: Cubs manager Rick Renteria said he wanted Javier Baez to grind out some at-bats, and on Wednesday, he did and he didn't. The 21-year-old second baseman jumped on the first pitch in his first two at-bats before using 11 pitches in his final two. All in all, Baez finished 0-for-4 and now is 1-for-10 in his big league career.

Mound Fuji returns: Coming in with no outs and two aboard in the nightmare that was the sixth inning, Kyuji Fujikawa hit Charlie Blackmon before forcing a double play and fly out. It was Fujikawa's first appearance in the bigs since he had Tommy John surgery in June 2013.

Mr. Consistent: Chris Coghlan has no idea what’s going to happen tomorrow, let alone what’s going to happen after this season. With a nonguaranteed future ahead of him, however, Coghlan has been nothing but predictable with the Cubs in 2014 -- predictably consistent. On Wednesday, Coghlan was 3-for-3, bumped his average north of .300 and came up a home run shy of hitting for the cycle. The Cubs have control of the outfielder through 2017, but it's unclear if they'll bring him back in 2015.

What’s next: The Cubs finish their series against the Rockies on Thursday before Baez makes his home debut at Wrigley over the weekend. Kyle Hendricks (2-1, 2.05 ERA) faces Yohan Flande (0-3, 5.72) at 2:10 p.m. CT.