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Colorado Rockies starting pitcher Drew Pomeranz hands the ball over to Colorado Rockies manager Jim Tracy in the fifth inning Sunday.

DENVER — At this rate, the Rockies better invest in some titanium for the guys in the bullpen. Otherwise, their arms are going to fall off from overuse.
On Sunday, once again, a Colorado starter failed to deliever quality innings. This time it was prized 23-year-old lefty Drew Pomeranz. He lasted just 41/3 innings in a 5-2 loss to the Arizona Diamondbacks.
“I tried to make good pitches and be efficient,” said Pomeranz, who made his 2012 debut. “I ended up throwing a lot of pitches and was behind a lot in the game.”
Pomeranz, the centerpiece of last summer’s trade that sent Ubadlo Jimenez to Cleveland, threw 100 pitches in his short stint, and only 61 were strikes.
Nine games into the season, Colorado’s rotation remains a major building project. Only one Rockies starter has earned a victory. That was Jeremy Guthrie in the season opener at Houston.
As manager Jim Tracy noted, the starters must pitch deeper into games if the Rockies are going to have a chance to contend.
“We have to get more length from our starters,” Tracy said. “Because if we continue in the manner in which we are right now, that’s going to become hurtful.”
The Rockies not only need more innings out of the rotation, they need better quality. The starter’s earned-run averages illustrate the story. The best of the bunch is 49-year-old Jamie Moyer with a 4.22 ERA. The others: Jhoulys Chacin (5.63), Juan Nicasio (6.52), Jeremy Guthrie (7.84) and Pomeranz (10.38).
What the Rockies could use right about now is a pitcher such as Diamondbacks sinkerball specialist Tre-vor Cahill. He pitched 71/3 innings, allowing just one run on four hits. He induced 14 groundball outs and struck out six. He has pitched at least six innings in each of his last five starts, dating back to last season.
“He was good today, getting the right pitch when he needed it,” Rockies right fielder Michael Cuddyer said.
On a bittingly cold and blustery day, the Diamondbacks sunk their teeth into Pomeranz early. Chris Young hammered a 3-2 fastball through the wind and into the left-field seats for a two-run homer in the first. It was Young’s fourth homer of the season.
“I threw a lot of balls down the middle,” Pomeranz said. “I’m really usually pretty good about staying corner to corner. I missed over the middle of the plate to a good fastball hitting team, and that’s what happens.”
The Pomeranz project also includes improving his policing of baserunners. The Diamondbacks robbed Pomeranz blind in the third. Gerardo Parra stole second and third and scored on Young’s single, putting Arizona ahead 3-0.
In the fifth, Arizona loaded the bases with two singles and a walk, setting up a two-run single by Aaron Hill. Trailing 5-0, Pomeranz’s day was done.
“His command was not quite what it was in spring training and he struggled with his breaking ball today,” Tracy said.
Colorado staged a mini-rally in the eighth, scoring two runs on an RBI-groundout by Tyler Colvin and a run-scoring infield single by Troy Tulowitzki. With two outs and the bases loaded, Ramon Hernandez came in to pinch hit against Arizona reliever Bryan Shaw. Hernandez grounded out to first to end the threat.
Diamondbacks 5, Rockies 2 Arizona ab r h bi Colo. ab r h bi
RRorts 3b 5 0 2 0 EYong lf 4 0 1 0
GParra lf 5 2 1 0 Colvin cf-rf 4 0 0 1
J.Upton rf 5 2 2 0 Tlwtzk ss 3 0 1 1
CYoung cf 4 1 2 3 Giambi 1b 3 0 0 0
Gldsch 1b 4 0 1 0 Guthrie pr 0 0 0 0
A.Hill 2b 2 0 1 2 RBtncr p 0 0 0 0
JMcDnl ss 4 0 0 0 Cuddyr rf 3 0 0 0
HBlanc c 4 0 1 0 MtRynl p 0 0 0 0
Cahill p 4 0 0 0 Hrndz 1b 1 0 0 0
Patersn p 0 0 0 0 Rosario c 3 0 1 0
Ziegler p 0 0 0 0 Nelson 3b 4 0 0 0
Breslw p 0 0 0 0 JHerrr 2b 4 1 3 0
Shaw p 0 0 0 0 Pomrnz p 1 0 0 0
Roenck p 1 0 0 0
Fowler cf 0 1 0 0
Totals 37 5 10 5 Totals 31 2 6 2
Arizona 201 020 000 — 5
Colorado 000 000 020 — 2
E –J.Upton (1). DP — Arizona 2. LOB — Arizona 8, Colorado 6. 2B — Goldschmidt (2). HR — C.Young (4). SB — G.Parra 2 (2), J.Upton (1), C.Young (2).
Arizona IP H R ER BB SO
Cahill W,1-0 71/3 4 1 1 2 6
Paterson 1/3 1 1 1 1 0
Ziegler 0 1 0 0 0 0
Breslow 0 0 0 0 1 0
Shaw S,2-2 11/3 0 0 0 0 1
Colorado IP H R ER BB SO
Pomeranz L,0-1 41/3 9 5 5 2 3
Roenicke 22/3 1 0 0 1 5
Mat.Reynolds 1 0 0 0 0 2
R.Betancourt 1 0 0 0 0 1
Ziegler pitched to 1 batter in the 8th. Breslow pitched to 1 batter in the 8th. PB — Rosario. Balk — Pomeranz. T — 3:19. A — 26,952 (50,398).
Late Saturday
Rockies 8, Diamondbacks 7 Arizona ab r h bi Colo. ab r h bi
RRorts 3b 4 2 1 0 Scutaro 2b 3 1 0 0
GParra lf 4 0 3 1 Fowler cf 3 1 0 0
J.Upton rf 5 2 1 0 Chatwd p 0 0 0 0
MMntr c 4 1 1 3 Giambi ph 1 0 0 0
CYoung cf 4 0 2 1 Tlwtzk ss 4 0 0 0
Overay 1b 3 0 0 0 Helton 1b 4 1 1 2
Gldsch ph-1b 1 0 0 1 Cuddyr rf 4 1 3 1
A.Hill 2b 4 1 0 0 Colvin lf-cf 4 2 2 2
JMcDnl ss 4 1 2 1 RHrndz c 4 1 1 1
Cllmntr p 1 0 0 0 Pachec 3b 3 1 1 0
Blum ph 0 0 0 0 Brothrs p 0 0 0 0
Miley p 2 0 1 0 EYong lf 1 0 1 1
DHrndz p 0 0 0 0 Chacin p 2 0 0 1
Putz p 0 0 0 0 Roenck p 0 0 0 0
MtRynl p 0 0 0 0
Belisle p 0 0 0 0
Nelson ph-3b 2 0 1 0
Totals 36 7 11 7 Totals 35 8 10 8
Arizona 100 031 110 — 7
Colorado 031 100 012 — 8
Two outs when winning run scored. E — Tulowitzki 2 (3), Chacin (1). DP — Arizona 1, Colorado 3. LOB — Arizona 9, Colorado 6. 2B — Jo.McDonald 2 (2), E.Young (1). 3B — Cuddyer (1), Pacheco (1). HR — M.Montero (2), Helton (1), Colvin (1), R.Hernandez (2). SB — C.Young (1), Scutaro (2). CS — A.Hill (1). S — G.Parra. SF — Goldschmidt.
Arizona IP H R ER BB SO
Collmenter 4 5 5 5 3 2
Miley 3 2 0 0 1 0
D.Hernandez H,3 1 2 1 1 0 2
Putz L,0-1 BS,1-5 1/3 1 2 2 0 1
Colorado IP H R ER BB SO
Chacin 4 4 1 1 3 5
Roenicke 1 2 3 3 1 0
Mat.Reynolds H,1 1/3 0 0 0 0 0
Belisle BS,1-1 2/3 1 1 0 0 0
Brothers 1 2 1 1 0 0
Chatwood W,1-0 2 2 1 1 1 3
HBP — by Putz (Scutaro). WP — Chacin. T — 3:19 (Rain delay: 1:11). A — 29,856 (50,398).
There is the quick update of the day.