PHOENIX -- Having Hanley Ramirez back in the lineup in a couple of days remains a possibility, but the Marlins are taking a wait-and-see approach with their gifted shortstop.

Ramirez didn't travel with the team to Arizona on Sunday night -- instead he remained in South Florida and had his left shoulder examined on Monday morning by Dr. Dan Kanell, the team physician.

In his first at-bat on Sunday against the Reds, Ramirez suffered a slight dislocation to his left shoulder. He left the game in pain.

After being tested in South Florida, Ramirez remains day-to-day, with Wednesday being the earliest the 23-year-old would be ready to start.

Being without Ramirez is a huge blow for Florida. The rising star is batting .336 with 16 home runs, 46 RBIs, 27 stolen bases and 74 runs scored.

Ramirez has had a history of problems with the shoulder. A year ago, he was out of the starting lineup for five games for a similar problem, injuring his shoulder on a swing.

And in December, he fell awkwardly on the shoulder while playing Winter League ball in the Dominican Republic.

"We'll see how it goes," general manager Larry Beinfest said. "We've seen it before with him, and he's come back, but it's [having a shoulder issue] not great."

Ramirez's setback comes at a time the Marlins won three straight and completed a 6-4 homestand.

"It just seems like this year, there is this big headwind blowing in our face all the time," Beinfest said. "We were finishing up a decent homestand, we'd played poorly at home before, and we lose Hanley."

Alfredo Amezaga, who had been starting in center field, is replacing Ramirez at short, and Cody Ross is playing center field.

"We'll run Alfredo out there and Cody in center, and get ready to go," manager Fredi Gonzalez said.

Make a deal? For the most part, it's been pretty quiet on the Marlins' trade front.

This is a crucial seven-game road trip leading up to the July 31 non-waiver trade deadline.

"We're making calls, and receiving calls," Beinfest said. "People are checking what opportunities [are out there]. I'd say it's normal, league-wide business.

"It may be quiet in terms of number of deals. I think it's early to say whether it's totally quiet or not."

The Marlins feel they have some injured players set to come back who will help for the stretch run.

Josh Johnson, who will have a rehab start for Class A Jupiter on Wednesday, could come off the disabled list and make a start as early as July 31 against the Rockies. Johnson is recovering from stiffness in his forearm.

"J.J. is a big help," Beinfest said. "You can't trade for that."

More pitching help could be on the way from the Minor Leagues, as reliever Carlos Martinez is progressing at Double-A Carolina. Martinez is returning from Tommy John surgery.

Olsen to start: Scott Olsen's legal troubles will not keep the 23-year-old lefty from making his scheduled start on Wednesday at Arizona.

In the early hours of Saturday morning, Olsen was charged with driving under the influence and several other charges.

The team kicked around what action to take on Olsen, who has been scolded by the organization. But the Marlins are allowing the legal process to take its course on the matter.

"There's a legal issue going on, and we can't comment on it," Gonzalez said.

Olsen will stay in the rotation.

Injury update: Aaron Boone [knee] is not close to returning. The veteran is doing strengthening exercises, and while he played some minimal catch on Monday, he isn't doing many baseball activities.

Outfielder Alejandro De Aza played in a rehab game in the Gulf Coast League on Monday, and he went 2-for-3 with a bunt single and stolen base. Out with a stress fracture to his left ankle for almost the entire season so far, the club still isn't sure how much De Aza will play in 2007.

Ricky Nolasco (elbow) threw 30 pitches in a simulated game on Monday, and he's seven-to-10 days away from a rehab assignment.

Henry Owens (shoulder) is doing light throwing, and Logan Kensing (Tommy John surgery) should start a rehab assignment in five-to-seven days.

Johnson will throw about 70 pitches (or four innings) on Wednesday.

Treanor starts: Looking for answers to Dontrelle Willis' struggles, the Marlins decided to give catcher Matt Treanor behind the plate on Monday night.

Miguel Olivo has caught Willis all season. Treanor, respected for his defense and ability to handle pitchers, is now getting a shot.

Gonzalez didn't rule out pairing up Willis and Treanor down the line as well.

For much of the season, Treanor had pretty much caught Byung-Hyun Kim. Now, he could be working with Willis.

"Maybe he handles him a little better," Gonzalez said.

Benitez aching: Armando Benitez has been bothered by a viral infection, and he was not available on Monday night. Hoping to get the veteran well, he remained back at the team hotel.

Benitez should be better in a few days.

The right-hander has handled the eighth inning. Matt Lindstrom is the first eighth-inning option, but Justin Miller and Lee Gardner are options to work the eighth with Benitez out.

Up next: In the second game of the series, Sergio Mitre (4-4, 2.82) takes the mound for Florida. The Diamondbacks are going with Livan Hernandez (5-6, 4.77).