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8/23/2013 8:11 P.M. ET

Amaro: Sandberg has done OK in first week

PHILADELPHIA -- The Phillies finished Ryne Sandberg's first week as interim manager with a 4-3 record.

"I think they've been doing OK," general manager Ruben Amaro Jr. said Friday afternoon at Citizens Bank Park. "Obviously winning is better than losing. They're staying in games and staying after it. I haven't had any complaints from the players, and so far he's done OK."

Asked about wins and losses determining Sandberg's future with the team, Amaro said, "It doesn't have anything to do with wins and losses for me. It's about how he handles himself being in this position on a lot of different levels. So far, he's handled himself pretty well."

Amaro said he has liked "a lot of things" Sandberg has implemented, but he declined to elaborate.

"I'll keep them to myself," Amaro said.

Pettibone done for the season due to arm issue

PHILADELPHIA -- Phillies right-hander Jonathan Pettibone's season is finished.

He still has inflammation in his right rotator cuff as well as some changes in his labrum, so the Phillies will stop him from throwing the next three to six weeks. That means there is not enough season remaining for Pettibone to try to come back.

But Pettibone fared well in his rookie season. He went 5-4 with a 4.04 ERA in 18 starts.

"He showed some good things," Phillies interim manager Ryne Sandberg said. "He showed some growth. He showed composure out there. He pitched some quality games. He gave the team a chance to win. I had him in Lehigh Valley and it was the same stuff. I think it was a good experience for him. I think he showed he can do it. He just had a real good look about him out there."

Pettibone is getting a second opinion on his shoulder from Dodgers physical Neal ElAttrache.

"We're going to be cautious with him," general manager Ruben Amaro Jr. said. "We don't want to mess with Jonathan too much."

Sandberg has Phillies reporting to games earlier

PHILADELPHIA -- One small but noteworthy change Ryne Sandberg has made in his first week as interim manager with the Phillies is having players report to the ballpark four hours before 7 p.m. games.

In the past, players only needed to be ready for their group stretch, which typically happened after 4 p.m.

"I just want to know when everybody is here, in case I want to get everybody together," Sandberg said. "I think that works well in forming a team and making it a team concept. So, that took place."

Sandberg said players have been receptive to it. Not that they have a choice.

"Nobody has been late," he said. "It's an easy concept. It's a done deal. It's about focusing on the games. For me, it's a non-issue."

Sandberg said the report time for day games will be different, with the ability to adjust.

"There are some breaks to that and some common sense," he said.

Worth noting

• Right-hander Tyler Cloyd will start Sunday against the D-backs.

• The Phillies had discussed possibly playing Cody Asche in the outfield before the end of the season, but it sounds like the plan is to keep him at third.

"He looks really good at third base," Sandberg said. "I like what he's done over there. With his potential bat, I think he's going to be some kind of a hitter. His bat is a long time through the strike zone. He has a nice level swing. He has a line-drive mentality. I think as he gets a little stronger, I think his bat will play at third base as well as his range and his arm. Right now, I think he needs to concentrate and keep progressing at third base."

• Sandberg said he still has his first Phillies cap from when he joined the team as a September callup in 1981.

"I liked the Vet," Sandberg said. "For four years [in the Minor Leagues], I dreamt about playing at the Vet and being a Phillie, and that's how it was. You talked about being a Phillie and wanting to be a Phillie, and I heard about the Vet so much. It was a dream. As a visiting player, I used to go in there and be excited about playing there. I used to get some high fastballs to hit there and I didn't miss too many of them."

He wasn't joking. Sandberg hit .287 with 26 doubles, four triples, 15 home runs, 53 RBIs and an .815 OPS in 493 career plate appearances at Veterans Stadium. The only place he hit better? Wrigley Field, where he had a career .854 OPS.

• Amaro confirmed it is unlikely Ryan Howard rejoins the team before the end of the season. They just want to get him healthy.

• Center fielder Ben Revere (broken right ankle) is progressing with his weight-bearing exercises. The Phillies still think he could be back before the end of the season.

• Left-hander Joe Savery (stiff left elbow) threw Wednesday and will throw again Sunday.

Todd Zolecki is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.