MLB

Diamondbacks-Rockies Preview

It's tough for a starting pitcher to carve out a name for himself in the NL West with the Kershaws, Bumgarners and Greinkes of the division hogging headlines and awards.

Jorge De La Rosa has been trying for eight years to no avail, and in addition to an ERA consistently north of five cramping his style, having someone by the same surname showing signs of passing him by can't be helping.

Rubby De La Rosa has done that in recent starts, though staking a claim as the more productive De La Rosa hasn't required much and is up for grabs Thursday when the Arizona Diamondbacks and Colorado Rockies complete a poorly pitched three-game series.

The two have never appeared in the same game, but if the series thus far is any worthwhile indication, they're both doomed. After Arizona's 8-7 win Wednesday, only one of the set's four starters has made it the requisite five innings to qualify for a win.

Over the last 11 games between the two clubs, pitchers have been mere middlemen with the Rockies averaging 6.5 runs and batting .311, while the Diamondbacks are at 6.3 and .323. Colorado's starting staff has a 6.35 ERA and Arizona's a 6.87.

Arizona (35-36) got four hits from Yasmany Tomas for the first time Wednesday, and the rookie is batting .349 in his last 32 games. Paul Goldschmidt homered and is batting .429 with 31 RBIs in his last 24 against the Rockies.

The Diamondbacks are a game away from getting back to .500 for the first time since being 8-8 on April 24, while Colorado (31-40) saw a three-game winning streak end after blowing a two-run lead in the ninth.

Nolan Arenado is batting .372 on an 11-game hitting streak, while Troy Tulowitzki is hitting .421 on a 14-gamer at Coors and .417 in his last 37 against Arizona.

The Rockies haven't scored under four runs in eight games, averaging 6.3 with 31 extra-base hits, but they've gone 3-5 thanks to a 7.50 ERA from the rotation.

Among the struggling arms on each team, it seems Rubby De La Rosa (6-3, 4.96 ERA) at least has grown tired of serving up batting practice.

The right-hander has won his last two starts with a 0.60 ERA over 15 innings. He gave up two runs - one earned - and five hits in seven innings of Friday's 4-2 home win over San Diego. Arizona hopes he's turning a corner after posting a 5.84 ERA though 12 starts.

"He's getting better mentally because he's always had really good stuff," catcher Welington Castillo told MLB's official website. "That's part of my job to calm him down because it's not easy to get rid of bad habits. I just try to calm him down and let him make the pitch that he needs to make."

The 26-year-old has won both of his starts against Colorado with a 3.27 ERA, though they came back in 2011 with the Los Angeles Dodgers.

Jorge De La Rosa (4-3, 5.47) gave up six runs and 11 hits with three walks in five innings of Friday's 9-5 home loss to Milwaukee, dropping to 2-2 with a 7.56 ERA in seven starts at Coors.

"It wasn't only the first inning. It was all the innings," said De La Rosa, who allowed three runs in the first inning. "I did the same thing. That's why we lost the game. With the stuff I had today, it's nothing I can live with. Anyone can see it."

The left-hander is also 0-4 with a 5.34 ERA in his last five starts against Arizona.

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