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08/06/12 7:33 PM ET

Hernandez available out of 'pen for D-backs

PITTSBURGH -- David Hernandez's right leg was a little sore and swollen, but the D-backs reliever said he expected to be available to pitch if needed Monday night.

Hernandez was struck on the side of his lower right leg in the eighth inning Sunday, which turned into a nightmare for the D-backs.

"Not quite the shin or the calf," Hernandez said of where the ball hit him. "It's just a little sore and if I sit down it gets stiff, but once I start moving around, it loosens it up. I don't think I'll need any time off, so that's good."

The Phillies got three infield hits during that inning, and Hernandez's throw to first hit Dominic Brown as the Phillies scored a run to tie the game.

Hernandez has done his best to try and put the frustration of the inning behind him.

"What happened yesterday?" he said with a smile. "It's just one of those things, it's going to happen over the course of the season. It was unfortunate, because any time you score four runs off a Cliff Lee-type pitcher, you expect to win that game and it's just unlucky. I feel like I made some good pitches, but sometimes that's just the way the ball bounces."

D-backs claim Nieves to fill injured Blanco's void

PITTSBURGH -- Looking for a veteran catcher to take the place of the injured Henry Blanco, the D-backs on Monday claimed Wil Nieves off waivers from the Rockies.

Blanco injured his left thumb in Sunday's game against the Phillies. He flew back to Phoenix on Monday for an MRI and to be examined by hand specialist Don Sheridan, but signs pointed to him having a torn ligament, which would likely end his season.

"He just woke up today and was way swollen, and it was way loose," D-backs manager Kirk Gibson said of Blanco. "Henry's thumb was not good today."

Nieves, 34, hit .298 in 16 games with the Rockies before being designated for assignment last week. When they realized Blanco's injury was likely to keep him out of action for a while, the D-backs quickly put in a waiver claim on Nieves.

"The first couple of days I'm going to be lost, but it's going to be good, man," Nieves said. "It's a good team, they're in a great position and I'm going to try to help them any way I can."

Nieves has played in parts of nine big league seasons with the Padres, Yankees, Nationals, Brewers and Rockies.

"It was surprising, because I was having a good year with Colorado," Nieves said of being designated for assignment. "In the beginning, it was frustrating that it was happening to me again now that I'm having a good year, but God is always in control. He's always in control of my career, and if he closes a door somewhere, he's going to open another one. So maybe I thought that was the best for me, but maybe this is the best for me right now, so I'm just happy to be here."

In order to familiarize himself with the D-backs' pitching staff, Nieves plans to catch the starting pitchers' between-starts bullpen sessions as well as catch relievers warming up in the bullpen when he's not playing.

"Every time you get to a new organization, they do things different, but it's the same baseball. And when I go out there, I just want to do what I know how to do," Nieves said. "Obviously I need to learn the pitchers and what they like to throw, and that will come with me coming to the bullpen and talking to them, communication."

D-backs poised to host first doubleheader

PITTSBURGH -- For the first time in team history, the D-backs will play host to a doubleheader when they take on the Marlins in a day-night twin bill on Aug. 22.

The doubleheader came about because the D-backs were scheduled to play 23 straight games, which is a violation of the Basic Agreement between the owners and the players. Therefore, Major League Baseball allowed them to have an off-day Aug. 23 and move the Marlins game scheduled for that day to Aug. 22.

The first game will start at 12:40 p.m. MST, while the second one will begin at 6:40 p.m. MST.

The D-backs will give away commemorative pins to fans who attend both of the games. Fans attending the first game will receive a voucher and will need to present the voucher when they come through the gates at the start of the second game to receive the limited-edition doubleheader pin.

The doubleheader will be the first in a domed or retractable roof stadium since Sept. 26, 2007, when the Seattle Mariners and Cleveland Indians played a makeup game at Safeco Field from a snow out in Cleveland.

The D-backs will offer fans a Doubleheader Deal which includes a regular hot dog, regular popcorn and regular drink for just $6 at any Doubleheaders concession stand. The team will also offer discounts on merchandise at the Team Shop, including player T-shirts for $19.98 rather than the usual $28. In addition, limited-edition D-backs doubleheader T-shirts will be available in the Team Shop for $25 while supplies last.

Several downtown businesses are offering fans special deals between games. For the most up-to-date deals, visit dbacks.com/doubleheader.

  Both games will be televised by Fox Sports Arizona and heard on KTAR Arizona Sports 620 and ESPN Deportes 710 AM.

Tickets can be purchased online.

Steve Gilbert is a reporter for MLB.com. Follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.