After taking the rest of the 2010 season off to recover from the operation, Rondon was all business this spring but still struggled to regain his strength early on.
"In the beginning I was feeling a little weak," Rondon said with the help of a translator. "But I was working hard. Eventually I was able to get my strength back and start putting it all together."
It was a long road to getting back on the mound, but the Dominican native takes it all in stride and candidly offers the details of his road to recovery.
"I had the surgery in June of last year and then it started with a lot of bullpens, easy bullpens. And I couldn't really throw off the mound, but more and more I started feeling better and building my strength. I got back on the mound," he continued. "Started throwing batting practice and it started to happen."
The twenty-three year old lefty must be feeling pretty good at this point, if Staten Island's opener was any indicator. Rondon tossed one inning and struck out the side, appearing animated and determined in his return.
Asked what pitches he went to on the mound in his return, the confident lefty was up to his old tricks with his fastball and devastating slider. He wouldn't talk about what speeds he was at, but maintained the pitches were sharp and accurate.
"I was hitting both sides of the plate, attacking them with fastballs and sliders. It felt good but I was trying to keep my mechanics in the front of my mind."
Rondon, who sat 94-96 mph in the opener, started the 2010 season with the Charleston RiverDogs but does not know if a return is imminent. He insists it isn't important right now and doesn't concern himself with the next step in his return.
"They haven't told me any plans yet, and that's fine with me. The only plan is to get my innings in over here and keep building my strength up until I hear something else. I feel 100 percent so I'm just thinking about pitching here and keeping it going until they tell me different."