MILWAUKEE -- After a positive week of rest and light workouts, Brewers left-hander Doug Davis had a recurrence of chest pain on Monday night and conceded he might need more than the minimum 15 days on the disabled list.

Davis is on the disabled list with pericarditis, an acute inflammation of the lining around his heart. The painful condition first struck in the wee hours of May 15, and Davis was placed on the 15-day disabled list the next day. He has been on a regimen of anti-inflammatory medication since then.

"I think last night I regressed a little bit," Davis said. "I couldn't sleep because of the pain. But I took my painkillers and that was that. ... It was a lot of pain to lay down and take deep breaths."

Davis did not accompany the team on its just-completed road trip. After a check-up on Thursday, he was cleared to play catch, and did so on Friday, Saturday and Sunday. He followed Sunday's catch with a very light workout and felt fine most of Monday before experiencing chest pain at night.

He's not sure when he'll see the doctor next, or when he will be able to return to the mound.

"I wish I could give you a time frame," Davis said. "I wish I had a time frame myself. My wife, my kids, everybody wishes that. It all depends on symptoms."

With Davis sidelined, left-hander Manny Parra will remain in Milwaukee's starting rotation, manager Ken Macha said. Parra's next scheduled start is Saturday against the Mets.

In other injury news:

The Brewers expected to get more information Tuesday evening about two other players on the 15-day disabled list. Catcher Gregg Zaun declined to answer questions about his strained right shoulder until after his visit with Dr. William Raasch before Tuesday's game, but Macha said, "it appears that he is going to be on the DL for a while."

Reliever LaTroy Hawkins said strength tests have shown improvement in his weak right shoulder. He has not pitched since May 5.

"I'm getting there," Hawkins said.

Outfielder Jody Gerut was scratched from Sunday's lineup in Minnesota with a bruised left heel. He was injured the day before, when he arrived in the middle of the Brewers-Twins game after missing two days to attend the birth of a child and was inserted in place of injured Joe Inglett. Gerut was hurt running to first base on a ninth-inning single, but given the team's decimated bench, he continued to play the rest of the game, won by the Twins in 12 innings. On Tuesday, Gerut was walking with a noticeable limp.

Inglett, who sprained his left ankle sliding into home plate in the fifth inning of that game, said he was ready to play if called upon Tuesday night.

Macha wants to move past negativity

MILWAUKEE -- Even-keeled Brewers manager Ken Macha has had enough of the questions about his job security.

He made that very clear during his daily afternoon briefing with reporters on Tuesday when asked about the weekend vote of confidence he received from Brewers principal owner Mark Attanasio.

"I told you, I go about my job the same way, and that's what I'm going to continue to do," Macha said. "I've had a lot of success doing it this way. If you have a business, and you run your business successfully, and all of a sudden you get a little bit of a downturn, what do you do? Panic and change everything you're doing, or continue the course? That's what we're going to do. We come out here every day to get these players ready to play.

"Sunday was an exceptional day," Macha said, referring to the Brewers' win in Minnesota, "and to have any negative questions in this meeting today is poppycock. Because, we had a tough game on Friday, a game where we battled back on Saturday against a team that is leading its division in the American League, at their ballpark, had a blown save, played extra innings and had everybody on the staff come in and volunteer to pitch innings, then come back and beat them Sunday.

"That's an incredible win. We should come home on a high and be positive and ready to turn this thing around. If we continue the negative thoughts and negativism, it's not going to come around. All of the Brewers' fans should be positive. I know my staff, myself, we're positive. We have some things happening in our bullpen now. We're going to try to correct the difficulties we've had. It should be a positive mood right now.

"That," Macha told his questioner, "was your last question of the day."

Macha had a more positive interaction earlier in the day at a Milwaukee golf shop. Macha was pit shopping for a new cap.

"A fan came up to me with a Brewers shirt on and said, 'Hey, thanks for all your hard work. I haven't given up. I still have my Brewers shirt on,'" Macha said. "I'm sure there are a lot of fans in Milwaukee that are behind this team one thousand percent."

Catcher Lucroy makes first big league start

MILWAUKEE -- Brewers catching prospect Jonathan Lucroy made his first Major League start in Tuesday's 6-1 win over the Astros. He was apparently well-prepared.

"We gave him the Houston [scouting] information back on Sunday, and he had a whole day to read it over," Brewers manager Ken Macha said. "He beat the manager here today. So that's going to be a $50 fine. He was in the video room at noon, watching video, trying to prepare as best he can."

That's $50 Lucroy will willingly spend. He was promoted from Triple-A Nashville last week to replace injured veteran Gregg Zaun. The Brewers picked Tuesday for Lucroy's first start, because they had an experienced pitcher in Randy Wolf set to start.

Zaun's role, "is a very difficult position to replace," Macha said. "That's why veteran catchers stick around so long. It's not just learning the hitters, but game situations and [the fact that] hitters make adjustments in games. I'm not against a younger guy being back there. It's a good opportunity for [Lucroy] to gain some experience."

In the second inning of Tuesday's game, there appeared to be some confusion between Lucroy and Wolf, which may have contributed to the longest inning of the night for the lefty. In the inning, Wolf walked two and gave up a single before escaping with zero runs on the board.

Wolf and Lucroy talked several times on the mound in the game, as they hoped to avoid letting any confusion affect the outcome.

"Obviously there was a little confusion early on, but all it is really is getting to know his signs and get to know how he pitches and the way it goes," Lucroy said. "Sometimes things get a little confusing back there. It'll be better next time, I promise."

Despite the difficulties with the signs, Wolf was very pleased with Lucroy in his Major League debut.

"He did an outstanding job," Wolf said. "He should definitely be happy with what he did behind the plate today."

Worth noting

Macha said that Trevor Hoffman would make at least one more appearance in a setup role before he's considered for reinstatement to the closer's role. Hoffman made his 1,000th appearance in Sunday's win as the setup man for John Axford, and worked a scoreless, 10-pitch inning. ... The Brewers signed right-hander Jeff Bennett, a 2003 Rule 5 Draft pick who spent all of '04 with Milwaukee, to a Minor League contract on Tuesday. Bennett, who has also appeared in the Majors with the Braves and Rays, reported to extended spring training in Phoenix to await his assignment. He was released by Tampa Bay on May 13. Bennett could eventually help replenish the pitching staff at Triple-A Nashville, which has lost Marco Estrada and relievers Axford and Zach Braddock to Major League promotions over the past 10 days. ... Wisconsin's R.J. Seidel, a right-handed Brewers pitching prospect, was transferred from extended spring training camp to Class A Brevard County on Monday, and he pitched a scoreless ninth inning in his debut. Seidel, 22, of LaCrosse, missed most of the 2009 season after surgery to repair a torn ACL in his left knee. ... Two rehabbing prospects are on their way up in the Brewers' farm system. The team announced Tuesday night that third baseman Mat Gamel (right shoulder) and pitcher Josh Butler (right elbow) would be transferred from Class A Brevard County to Double-A Huntsville. ... Triple-A Nashville starter Kameron Loe's "opt-out" date is June 5, FoxSports.com reported on Tuesday. When Loe signed with the Brewers in December, the date reportedly was set for June 1. Loe, who signed a Minor League contract with Milwaukee in December, is 4-2 with a 2.70 ERA entering his scheduled start Thursday at Sacramento. Another Nashville starter, lefty Chris Capuano, has a May 29 opt-out clause that comes the day after his scheduled start at home against the Iowa Cubs.