(Sports Network) - Ryan Tucker and Jorge De La Rosa can only hope for the same kind of run support their teams provided in the opener of this set on Friday, as the Florida Marlins and Colorado Rockies resume their three-game series at Coors Field.

In a wild beginning to this set on Friday, Chris Iannetta drove in four runs, including the game-winner in the bottom of the ninth, as Colorado overcame a nine-run deficit to pull out an improbable 18-17 win.

With Kevin Gregg on to close with a 17-16 lead, Clint Barmes and Matt Holliday started the ninth with back-to-back singles. Garrett Atkins then ripped a liner to left for a single, and Barmes sprinted home with the tying run. Jeff Baker hit a grounder to second that looked to be a surefire double play, but Hanley Ramirez dropped the flip to second and the bases were loaded. Iannetta then slapped a grounder through the drawn-in infield to give the Rockies one of the most unlikely victories in franchise history.

The teams combined for 43 hits and eight home runs -- six from the Rockies -- in the slugfest. The nine-run deficit is the largest the Rockies have ever overcome and the largest lead the Marlins have ever lost.

Atkins finished 5-for-6 with three runs batted in and three runs scored for the Rockies, who picked up their second straight win in their final at-bat and fourth in a row overall. Holliday homered twice -- including a grand slam -- and drove in five runs, while Spilborghs was 4-for-5 with a pair of long balls, three RBI and four runs scored. Barmes also had four hits and scored three times.

The rally made an unlikely winner out of Taylor Buchholz (3-2) who worked a scoreless ninth. Starter Greg Reynolds lasted just 1 1/3 innings, allowing seven runs on seven hits, while Cedrick Bowers was rocked for five runs in two frames and Jason Grilli was touched for four runs in an inning-plus.

Cody Ross had five RBI for the Marlins, who have lost three of their last four. Ramirez homered, knocked in two and scored three runs, while Jorge Cantu and Mike Jacobs had four hits apiece.

Gregg (6-4) blew his sixth save while taking the loss in relief of Scott Olsen, who lasted five innings despite being hammered for nine runs -- eight earned -- on 11 hits.

De La Rosa will take the hill for the Rockies this evening, as he tries to win for the first time in three starts. De La Rosa, who is 2-4 with a 6.70 ERA this season, received a no-decision on Monday against the San Diego Padres, surrendering six runs and 11 hits in five innings of his team's 15-8 setback.

He is 0-2 lifetime against the Marlins with a 10.03 ERA in three games, two of which have been starts.

Florida will counter with the rookie Tucker, who is 2-2 with a 6.84 ERA. Tucker also received a no-decision the last time he toed the rubber on Monday against Washington, as he allowed four runs and six hits in five innings of a 6-5 win.

Tucker has never faced the Rockies.

Colorado is facing the Marlins for the first time this season, but has split the six-game season series with Florida in each of the last three years.