ST. LOUIS -- The D-backs placed right-handed reliever Enrique Burgos on the 15-day disabled list with shoulder tendinitis Tuesday, one day after he experienced soreness when warming up to pitch.
Burgos, 24, has been used heavily since being called up from Double-A Mobile at the end of April. He has made 13 appearances, including one stretch of four games in five days and one of three games in four days.
"We've used him an awful lot," D-backs manager Chip Hale said before Tuesday's game, a 6-4 Cardinals victory. "These guys, when they come up from the Minor Leagues … they have never been pushed like we're pushing them. Partially my fault. Probably should have backed off him a little bit. He's been pitching so great. He's been getting out of such tough situations in games, and we just keep bringing him in. Finally, his shoulder was just tired. We don't feel like it's an injury yet. It could lead to that. We just need to give him the 15 days off."
The D-backs recalled lefty Vidal Nuno from Triple-A Reno to replace Burgos, who is ranked among the club's top prospects.
This is Nuno's second stint with the D-backs this year. He was called up May 11 and forced right into action when that night's starter, Josh Collmenter, lasted just 1 1/3 innings. Nuno threw 6 2/3 innings of relief and a couple of days later he was sent back to Reno.
Nuno started Saturday for Reno but said he was good to go Tuesday.
"It seems like I've got a rubber arm," Nuno said. "I know my body well, so I've been taking care of it."
Nuno did not have to wait long to get his first taste of action. He was summoned with two outs in the fourth inning and tossed 2 1/3 scoreless innings with five strikeouts.
Hale would like to get some more consistency from each member of the bullpen so that he does not end up overworking another effective reliever.
"We're going to try to shuffle around these bullpen guys and make sure we're a little more careful now," Hale said. "There's going to be times when guys who are not pitching at their best are going to have to come into some real tough, close games. That's what we need to do. We need to get everybody in that 'pen to the point where they can pitch in a game we're winning. That's what I've always wanted in a bullpen. I think we're getting close."