BRADENTON, Fla. - Felipe Rivero is having a nice spring.

After throwing two perfect innings today with three strikeouts, he now has no runs and one hit allowed in seven innings, with nine strikeouts. But the most impressive stat he's put up has been the walk total: Zero.

Rivero has shown some dominant stuff, with his changeup being one of the best swing and miss pitches in baseball, and elite fastball velocity for any hand coming from the left side. But control has always held him back, with a 3.86 BB/9 last year. So it's encouraging to see him off to such a great start with the walks this year.

According to Pirates' Manager Clint Hurdle, that was a big focus for Rivero coming into the season.

"One of his comments in his entrance interview was 'I need to pound the zone. I gave ...

To continue reading the rest of this article, subscribe to Pirates Prospects. Subscribers get access to every article on the site, along with all of our exclusive live coverage of the Pirates' minor league system, all for a very low monthly or yearly rate.

If you're already a member, you can log in below. If you think you're receiving this message in error, please e-mail tim@piratesprospects.com.