Even though D-backs closer J.J. Putz has an ERA of 7.20 through 15 innings this year, Gibson isn't entertaining the thought that the 35-year-old will lose his job anytime soon.
"No question, he's the guy; he's our closer," Gibson said. "Nothing has changed. It's not just J.J. We haven't put it together at this point."
Equipped with a one-run lead in the ninth on Tuesday, Putz served up a two-run double with two outs to the Dodgers' Ivan De Jesus Jr. for a blown save. The D-backs fell, 8-7.
"The big thing last night was just the walks," Gibson said. "Two walks, that hurt. Then he missed with one pitch, and they smacked it."
Two days after the D-backs designated third baseman Cody Ransom for assignment to bring up Josh Bell, the Brewers claimed the veteran off waivers on Wednesday.
"That's good for him. That's the rules. He's a good professional player. he did well for us," Gibson said. "We decided to do what we did. We lost him. We didn't want to lose him, but we wish him well. He's been around the game a long time. He appreciates the game. We just wish him not to well against us."
The D-backs host the Brewers starting Friday for a three-game National League Division Series rematch.
Batting .370 this season, including a 4-for-4 night on Tuesday, D-backs first baseman Lyle Overbay is impressing his manager, but Paul Goldschmidt still will continue to see the majority of the time at the position.
"I can't see Lyle playing five or six games a week. He's pretty effective the way he is now," Gibson said. "Last night was an exceptional game. He's very good defensively. He helps Goldy out there at first base."
Goldschmidt is batting .244 in 2012 with two homers and 16 RBIs.