San Diego will start right-hander Andrew Cashner, who hasn't won since June 11, while Milwaukee will give lefty Tom Gorzelanny his fourth start of the season.
The Padres are hopeful that Chase Headley has found his swing for good after a prolonged first-half slump.
Headley is starting to heat up. Though his .235 average is well below his .269 career mark, he's hitting .333 (16-for-48) with eight runs, six doubles, one homer and six RBIs over his last 13 games. During that stretch, he's raised his on-base percentage from .316 to .333.
"I think when Chase is at his best, the walk rate is high, and that tells us that he's swinging at strikes and taking balls and he's not expanding the zone," Padres manager Bud Black said. "Where I think he's gotten into trouble this year, I think he's tried to do too much. We all know what he did the last two months [of last season], and especially he knows what he did the last two months.
"He's probably inflicted a little bit more pressure on himself to try to replicate those last two months. It's just unfair for him to do that. Just play. Play your game."
Ryan Braun was slated to return on Monday, but he was suspended for the rest of the season for violations of Major League Baseball's Basic Agreement and its Joint Drug Prevention and Treatment Program.
Padres: Marquis hits DL, Mikolas recalled
San Diego placed Jason Marquis on the 15-day disabled list, retroactive to July 20, with a right elbow strain and recalled right-handed reliever Miles Mikolas from Triple-A Tucson. Marquis will see Cincinnati-based doctor Tim Kremchek for a second opinion on his elbow, which he injured in his start Friday against the Cardinals, and there is no set timetable for Marquis' return.
"Where he is in his career, he knows that this is not a short-term thing," Black said. "He will be out. We don't know exactly how long or the extent of the injury. ... I think when the MRI comes back, we can be more specific."
Mikolas, 24, has been called up twice this season, but he's pitched in only one game, tossing a scoreless ninth against the Giants on July 11.
• Tyson Ross will return to the Padres' rotation Tuesday in Milwaukee, Black said Sunday. Ross began the season as the team's fifth starter and made three starts before going on the DL on April 20. When he returned on May 5, he did so as a long reliever. He was sent down to Tucson earlier this month to get stretched out.
Brewers: Lucroy looking at first, outfield for '14
Jonathan Lucroy was limited to pinch-hitting duty Sunday so that Martin Maldonado could start behind the plate for Wily Peralta. Next year, Lucroy hopes, he won't have to interrupt his hot streaks with a stint on the bench.
Lucroy, who entered Sunday 9-for-14 in his last four games, said he talked to Roenicke and bench coach Jerry Narron about working the first base and outfield positions into his repertoire next season. He hopes to begin working there during Spring Training.
"The idea has been thrown around," Lucroy said. "I think I'm athletic enough to be able to play some outfield. ... You always want to keep the sticks in the lineup to give yourself the best chance to win. If there's any way I can stay in the lineup, be in the outfield or playing first base a game or something, that's what we're going to try to do."
• Carlos Gomez sat out Sunday due to pain in his right elbow, another inconvenient injury for the Brewers' All-Star center fielder. Gomez has also been dealing with a sore left shoulder and a sore left thumb, and he admitted those ailments have affected his swing. Gomez has only three hits in his last 39 at-bats, enough to drop his average from .319 to .292.
Roenicke hoped that taking Sunday off would allow Gomez to start Monday against the Padres.
• The Brewers are coming off three straight shutouts against the Marlins, giving Milwaukee's pitching staff a club-record streak of 35 straight scoreless frames. That tops the previous franchise mark of 31, set in 1990. The Brewers' three straight shutouts also matched a club record set April 19-21, 1990.
• San Diego has gone 3-5 in Cashner's eight road starts this season, compared to 4-3 in his outings at Petco Park.