"I think my fastball command [is the reason for my success]," he said. "I pound guys in hard. I go away at times, but because my fastball command is there, I'm able to utilize my other pitches well."
The Nationals go to Arizona to play a three-game series against the D-backs starting on Monday night. The trip is a big deal for Solis because he is from Arizona and his parents will attend the games.
"My parents haven't seen me throw yet," Solis said. "They came out for my first day and I didn't pitch and they flew back, so it will be nice to see everyone."
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the Time. He also can be found on Twitter @WashingNats. This story was not subject to the approval of Major League Baseball or its clubs.