PHOENIX -- Before Monday's series opener vs. the D-backs, the Reds had their entire rookie-level Arizona League affiliate on the field to watch batting practice. Among the group was the team's 2012 first-round pick, pitcher Nick Travieso.

"It's great to know [the big leaguers] were in the complex we were in," Travieso said. "Hopefully one day we'll get to be where they are. They were in our shoes."

Travieso, 18, was the 14th overall pick out of Archbishop McCarthy High School near Fort Lauderdale, Fla., and signed for a $2 million bonus on June 12. He's been making the challenging transition from high school kid to professional baseball pitcher.

In eight starts, Travieso is 0-2 with a 4.71 ERA, five walks and 14 strikeouts. Besides getting used to the heat and pitching with better location, he is adjusting to pitching every fifth day.

"I'm starting to get used to it now," Travieso said. "It's already toward the end of the season, but I've gotten it down a lot more. In high school, it's every eight or seven days. It was probably the biggest adjustment for me to get my arm used to it and used to all the throwing and getting prepared every five days."

Then there is the life off of the field and being away from home for the first time.

"It's a huge eyeopener," Travieso said. "You don't have your family to wash your clothes for you or cook for you. You're pretty much on your own. You spend your own money on your own budget. I feel like it's been great for me. I've adjusted pretty well. I'm loving the life."

Hanigan a threat to opposing basestealers

PHOENIX -- Trying to steal a base against Reds catcher Ryan Hanigan has become a higher-risk endeavor these days.

Hanigan entered Monday having thrown out 15 of the last 30 baserunners who have attempted to steal against him. The 32-year-old has caught 45 percent of attempted basestealers this season, which is third-best in the National League.

Is it a point of pride for Hanigan? You betcha.

"I feel like I'm pretty good at that -- throwing guys out when I have a chance," Hanigan said. "You have to work with the pitchers. It starts with them. They have to give me a chance. If I feel like I have a little chance of a window, I feel like it's on me to make a throw. Every out is huge. Cutting down innings with outs is important. It helps our pitcher and our defense get off the field."

Last season, Hanigan threw out 28 percent (13 of 46) of runners attempting to steal.

Nailing a runner at a key point, or late in a game, is particularly satisfying. For example on Aug. 19, he threw out the Cubs' Brett Jackson trying to swipe third base against Aroldis Chapman while representing the tying run.

"When guys are trying to get into scoring position and it's a close game, it's really a factor," said Hanigan, who's 3.08 catchers' ERA is best in the Majors. "Not only have you created an out, you're keeping a guy out of scoring position. It's always a good feeling when you can throw a guy out. It's an exciting play I'm sure for the fans. It's something I've always enjoyed and work at and keep up my arm strength. It pays off."

Reds taking a different approach to Sept. callups

PHOENIX -- The Reds will be making some September callups, likely around the end of Triple-A Louisville's season on Sept. 3. Teams can expand their rosters on Sept. 1.

Who is coming up and how many players remain in question.

"We haven't really nailed it down yet. We'll talk about it," Reds manager Dusty Baker said on Monday. "There have been some names mentioned."

With the Reds contending for a division title this season, it could affect how many callups there are and how they are utilized.

"It depends on what you need and who deserves it," Baker said. "Last year at this time, we were seeing what they could do, so to speak. Now we're in a different position. Now they're in a position to help, not necessarily to be seen."

Worth noting

• A pre-rehab-assignment workout on Monday for first baseman Joey Votto at Class A Dayton was canceled because of rain. Votto, who is trying to return from a left knee injury, is still slated to begin his two-game rehab assignment on Tuesday.