"It was nice," Chapman said. "I didn't expect him to come up and say anything. It was nice to get some feedback from a guy like him, especially after your first live BP. And it was positive, so that's definitely nice."
Clemens, who has a personal-services contract with the Astros that kicked in when he retired, was coaxed back onto the field by owner Jim Crane, and last month worked out a schedule with general manager Jeff Luhnow to pay three separate visits to Kissimmee and lend a hand.
"It's obviously great," pitcher Bud Norris said. "It's so encouraging to hear things from such a good source. He's seen me pitch for a couple of years now and knows my mechanics and sees the mistakes I've made. Obviously, when he watches me, he can give me some feedback, and I needed it today. Hearing it from the source and knowing it's coming from a good place is extremely helpful."
One of the pitchers Clemens took time to watch and critique was right-hander John Ely, who was acquired this offseason in a trade with the Dodgers.
"Right after I threw, he came over and mentioned a few things I was doing right, gave me a few suggestions," Ely said. "Obviously, whenever somebody like Roger is talking, you're a sponge. You're all ears. It's fantastic to be able to have him around. It's an unbelievable resource, a guy of his experience and what he's done. Having him around is going to be a huge resource for us, and I couldn't be happier about it."
Clemens' presence can be beneficial to position players, too, veteran slugger Carlos Pena said.
"Just having him around is a treat for all of us, and none of us here take that for granted," he said. "Everyone here appreciates every single second he gives himself to us. I know I'm not a pitcher, but he knows hitters. He knows how to pitch hitters. He was one of the best pitchers in baseball, and there was a reason.
"He knows how to look for weaknesses and stuff like that. There's a lot of stuff like professionalism we can learn. However, most importantly is having him around. It's a treat by itself just because of the way he is."
Clemens gave Pena grief at the batting cage about a bat Pena used during the 2007 season while he was with the Rays and Clemens with the Yankees. The bat, which Pena got from teammate Aki Iwamura, had a flat top unlike most bats, which are cupped.
"He said, 'We were scared of that bat. It sounds so loud,'" Pena joked. "He's always very positive and very encouraging, which I appreciate."