After the Marlins selected Voss in the eighth round of the 2007 draft, minor league pitching coordinator Wayne Rosenthal made him promise not to look back.
"It looks like two different pitchers," Voss said, when asked to compare his mechanics as an amateur and a professional. "Rosey told me never to look at that video again. He told me to keep it out of my sight, keep it out of my mind. That's in the past. I started with a clean slate and I feel good now."
The Marlins added Voss to the 40-man roster after last season and brought him to big league camp. He was reassigned to the minor league side early on, but that's not indicative of how the organization views him. In 30 appearances for Double-A Jacksonville last season, Voss was 3-0, 2.97 with 36 strikeouts and 15 walks in 36 innings. He opened the season at high Class A Jupiter.
Voss successfully reinvented himself as a reliever after going 3-13, 6.90 with 45 walks and 90 strikeouts in 117 innings working mostly as a starter his first two pro seasons.
"At first it was a little difficult because you feel like you've been demoted," Voss said of the transition to the bullpen. "I got past those first few days and I got a couple of outings under me, kind of learned how to change up your routine a little bit. It really suits me well because I like to go full bore. I like dressing every day thinking I have a shot to pitch."
With Rosenthal's help, Voss learned to keep his front side in and stay over the rubber. Now, he doesn't even think about his mechanics and as a result he's executing pitches better.
Strictly a four-seam fastball guy at one point, Voss in the Arizona Fall League began integrating a two-seamer to complement a slider he mostly keeps down in the zone to induce ground balls.
"The slider has been the bread and butter pitch," Voss said. "It's probably a little ahead of the changeup. I'm confident enough in my changeup that I can throw it to righties and lefties if I need to show a lefty a different look . . . I feel confident in both my offspeed pitches when I need a strike on a 1-0, 3-1 count to get back into a hitter."
• A candidate to open the season in the Marlins rotation when spring training started, lefthander Sean West was optioned to Triple-A New Orleans on March 15 after exhibiting serious command issues.
• Lefthander Graham Taylor (sprained elbow) and righthander Jose Ceda (tired arm) were not expected to break camp with their minor league clubs because of injury.