HOUSTON -- Brewers right-hander Shaun Marcum threw 28 of his 36 pitches for strikes in a three-inning start for Class A Wisconsin on Friday, the start of a rehabilitation assignment that could be very brief.

Marcum, on the disabled list since mid-May with tightness in his elbow, is scheduled to pitch again for the Timber Rattlers on Wednesday. If that goes well, he could return to the Brewers' rotation for their Aug. 20-22 series against the Cubs at Miller Park.

"It's all going to depend on pitch count," Marcum told reporters before Friday's game. "If I can get up to 65-70 pitches by the end of the second start, hopefully that will be enough for rehab starts and I can get back to Milwaukee."

Pitching in Appleton, Wis. against Cedar Rapids on Friday, Marcum allowed one hit -- a solo home run -- in three otherwise clean innings, with no walks and three strikeouts. He was ticketed for 35-40 pitches.

If Marcum can get back to the big leagues for that Cubs series, he would be in line for about eight starts before the end of the season. He is then a free agent.

"Free agency hasn't really crept into my mind too much," Marcum said. "Obviously, with the injury, going into free agency you want to be healthy. When teams come calling, you [prefer] there's no questions. It's part of it. Somebody will be out there, that hopefully I can sign on with. We'll see what happens. The main thing for me is, I have to stay healthy and pitching."

Brewers discuss innings limit for young pitchers

HOUSTON -- Mike Fiers is not the only Brewers pitcher who could see his season cut short as the ballclub considers ways to protect its valuable mound assets.

Manager Ron Roenicke said club officials have discussed -- but not yet made any firm decisions -- about limiting the late-season workloads of some young pitchers, including Fiers, the 27-year-old who didn't make it to the Majors until the waning days of May, but has worked his way into the National League Rookie of the Year discussion.

"A lot of this stems from what, publicly, is happening with [Nationals right-hander Stephen] Strasburg," Roenicke said. "[The Brewers] have done that for a while here, but I think when it becomes public like it has with him, then everybody wants to hear what's going on and what you're planning to do."

The Brewers' general plan calls for capping pitching prospects at about 30 percent of their workload in the previous season. But there is a lot of gray area; Yovani Gallardo, for example, jumped from 46 2/3 innings in a 2008 season interrupted by knee surgery to 185 2/3 innings in 2009, with no ill effects. Only very late in the '09 season did the Brewers shut Gallardo down.

Roenicke indicated the plan for the current crop of pitchers was not yet set, and that officials were considering an array of options for a variety of pitchers. Do you begin shortening his outings, or does that tax the bullpen and teach starters bad habits? Do you simply shut a pitcher down, or does that make for a discouraging end to an otherwise positive season? Do you "piggyback" two pitchers in the same game?

Fiers is 6-4 with a 1.80 ERA in 12 starts and one relief appearance. Including his time at Triple-A Nashville, Fiers has thrown 135 innings during the 2012 regular season, already a career high. He pitched 126 Minor League innings in 2011, and 125 innings in 2010.

Also under watch is right-hander Mark Rogers, who was limited to 44 1/3 innings last season because of injuries and a suspension and had worked 106 innings entering his start against the Astros on Friday. Rogers, a former first-round Draft pick whose progress has been slowed by various injuries, pitched a career-high 116 regular-season innings in 2010.

And fellow righty Marco Estrada, who bounced between the starting rotation and relief while pitching 92 2/3 innings last season, is already at 88 2/3 innings in 2012. Estrada has more of a track record; he pitched a career-high 143 2/3 innings in the Nationals' system in 2009.

"Some of the guys are to a point where we do need to talk about it, and try to figure out what's best for that individual," Roenicke said.

The Brewers won't be short of starting pitchers. Right-hander Shaun Marcum is nearing a return from the disabled list, and the team may want another look at Triple-A Nashville's Tyler Thornburg and Wily Peralta before the end of the year.

Last call

-- Left-handed reliever Manny Parra declared himself ready for active duty Friday after missing time with an impingement in his shoulder. Parra tested his arm in a successful live batting practice session on Wednesday.

-- Outfielder Carlos Gomez & Co. had a laugh on Friday afternoon when Brewers media relations director Mike Vassallo crossed an item off his personal bucket list, cracking a home run in a big league ballpark. Vassallo had been taking occasional swings in early batting practice for the last seven years.

Vassallo, who grew up a Mets fan, noted with glee that he now shares something in common with boyhood hero Darryl Strawberry. They each (sort of) hit their first big-league homer off Lee Tunnell, the former Pirates pitcher and current Brewers bullpen coach.