Basically, Tucson Padres starting pitcher Simon Castro is working on making his delivery more "compact."
Castro, one of the San Diego Padres' top prospects, is keeping his 6-foot-5-inch body more under control while pitching, allowing him to repeat his delivery and keep his fastball down.
Castro has been working on his mechanical issues since spring training and is trying to make his mechanics more consistent under the tutelage of Tucson pitching coach Steve Webber.
During his deliver, Castro said he is trying to stay in line and keep his balance.
He said he's lifting his leg, instead of swinging it, and following through on his pitches to keep the ball down.
Castro (0-1, 9.90 ERA) is scheduled to start today against Fresno.
"I like it," Castro said Tuesday before the Padres' 6-1 victory over Fresno at Kino Stadium. "It feels good. I think I can keep the ball down better with that."
By finishing strong and staying on top of the ball, Castro, a 23-year-old right-hander, said he can produce better results.
He has struck out seven and issued six walks in 10 innings.
"Every time I follow through, the pitch is going to have better life, more movement and will be a better pitch," he said.
Webber said he uses the word "compact" to explain Castro's tweaked delivery.
"He's keeping the delivery simple, his lower and upper body in sync, a quicker tempo," Webber said.
"It's a process to develop a delivery that allows him to throw down for strikes, have command of all his pitches. That's what we're working on. Everybody has to make adjustments to maintain your performance."
In his season debut, Castro allowed nine runs (eight earned) in four innings at Colorado Springs. He bounced back in Friday's home opener, giving up three runs, striking out five and walking three in six innings against Salt Lake.
"He settled down, got the ball down much better, had a very good slider at times," manager Terry Kennedy said.
"He's working on some mechanical things that could take a while. He's a big, gangly guy. When he gets a rhythm, everything is nice."
Castro said he hasn't changed his mechanics, just tried to make them more consistent. He has also worked with Padres minor-league pitching coordinator Mike Couchee during this homestand.
"It's been pretty good," Castro said. "These last two days I've been working on it.
"I feel pretty good."
• In his first start since 2008, Jon Leicester came off the disabled list and allowed a hit in four scoreless innings. Tucson (5-8) played its first errorless game of the season. "It all worked today," Kennedy said.
• First baseman Anthony Rizzo originally had the day off against a left-handed starter, but got in as a pinch runner in the fifth to replace Andy Parrino (hamstring). Rizzo hit an RBI double off Casey Daigle.
• In his return to the starting lineup, Logan Forsythe (shoulder tendinitis) hit a two-run home run in the first inning.
• Who: Fresno at Tucson Padres
• Where: Kino Stadium
• When: 7 p.m.