JUPITER, Fla. -- Right-hander Shelby Miller returned to the mound on Friday for a 25-pitch bullpen session that went seamlessly, just days after Miller had to be slowed down due to shoulder soreness.

"My arm feels really good," Miller said afterward. "The ball is coming out well. I knew it was going to feel good. None of the symptoms I was feeling were bothering me as of [Thursday], so I knew that it wasn't going to be there. I knew I was going to throw a good 'pen. But the biggest thing is how it feels in the days to come."

The shoulder soreness that had been bothering Miller surfaced after -- not during -- the live batting practice session he threw last Saturday. That's why the next day or so will provide an even better barometer of Miller's status. If nothing unexpected crops up as a result of throwing on Friday, Miller will continue his throwing program with another live BP session on Monday.

Because he got a bit behind schedule, Miller, the Cardinals' No. 2 prospect and No. 25 overall prospect according to MLB.com, is likely at least a week away from making his first Grapefruit League appearance. With the extended spring slate of games, though, the right-hander will still have plenty of time to make his pitch for a Major League rotation spot before a decision has to be made.

"I was talking with [pitching coach Derek Lilliquist] and [manager] Mike [Matheny] earlier and they said it was the best I've looked in my 'pens," Miller said. "My curveball and changeup look great. I'm locating well. I know I'm feeling better and letting it loose a little bit more."

Matheny offered advice to Marlins skipper Redmond

JUPITER, Fla. -- The Cardinals will begin their 32-game Grapefruit League slate on Saturday, with a 12:05 p.m. CT game against the Marlins at Roger Dean Stadium. The game will feature the Majors' two youngest managers, one of whom has been leaning on the other for advice and suggestions since taking the position.

Mike Redmond, 41, snatched the label of baseball's youngest manager from St. Louis' Mike Matheny, 42, last fall when he was hired to replace Ozzie Guillen in Miami. Like Matheny, Redmond is a former Major League catcher with no previous managerial experience at the big league level.

Only a year removed from his rookie managerial season, Matheny contacted Redmond during the offseason to offer perspective on what to expect during the first year of the job.

"I always appreciated that there were guys who reached out to me," Matheny said. "Not that I've got this wealth of knowledge or experience, but it was pretty fresh in my mind the challenges that come up with a guy stepping into the situation. We talked quite a few times."

Redmond said he appreciated the gesture from Matheny, who was one of many to reach out to the new Marlins skipper.

"If I have a question, I feel confident that I can go to him," Redmond said. "He's been through it already, and I haven't. I have a lot of respect for him and his career as a player. I know a lot of guys say a lot of great things about him, and the type of manager he is. I know that he is a great guy."

The Cardinals and Marlins, who share a Spring Training complex, will face each other eight times in Grapefruit League play. Trevor Rosenthal will start Saturday's game for St. Louis against Miami's John Maine.

Worth noting

• Position players participated in an intrasquad game for about an hour on Friday afternoon. Triple-A pitching coach Bryan Eversgerd, a left-hander, threw to all the hitters, most of whom took two at-bats in the game. Both Ty Wigginton and Rob Johnson deposited balls over the wall. Johnson also recorded a double.

• Rafael Furcal served as the designated hitter in the intrasquad game and had two hits in three at-bats. When he begins playing in Grapefruit League games, he'll likely stay in that DH role. The Cardinals continue to limit Furcal's exposure on defense due to his sore right elbow.

• Asked if he'll use a near-regular season lineup for Saturday's Grapefruit League opener, manager Mike Matheny said that "it's going to be pretty close." He did not confirm whether or not Matt Carpenter will make his spring debut at second base in the team's first game.

• In what was essentially a roster formality, the Cardinals have placed Chris Carpenter on the 60-day disabled list. That clears a spot on the organization's 40-man roster should the club want to add someone. Carpenter announced earlier this month that he is out indefinitely with continued irritation in his cervical spine and right shoulder.