ARLINGTON -- Brandon Webb rejoined the Rangers on Friday and threw a bullpen session with pitching coach Mike Maddux.

His next step will be pitching for Double-A Frisco on Monday in his first medical rehabilitation assignment. It will be the first time he has pitched in a real game since being the D-backs starter on Opening Day in 2009. Webb has spent the last two months pitching in extended spring training in Arizona.

"I'm good," Webb said. "I need to get out of Arizona. I got my pitch count up, that was the main goal."

Webb, who has been sidelined for over two years because of a shoulder injury, made five starts in extended spring training and worked his way up to 80 pitches over six innings. Webb will likely start out at 3-4 innings on Monday.

His command is improving after much side work with Arizona pitching coordinator Keith Comstock and his mechanics are sound again. He is getting much better at repeating his delivery, rather than getting out of whack pitch-to-pitch. His curve and changeup are coming around and he has good movement on his sinker, which is his most important pitch. His velocity is between 84-86 miles per hour.

"I was never a hard thrower and I'm about four miles per hour over where I used to be," Webb said. "I'm hoping when I get under the lights and in front of fans, that will come up. It's not going to come overnight, but time on the mound will take care of that.

"My curve ball is definitely getting better. It was roly-poly, but is has gotten better and the changeup is there. With my off-speed stuff, I can compete."