Notes: Mike Adams works on fastball

SURPRISE, Ariz. -- Mike Adams hasn't been happy with the command on his fastball in spring training.

So he threw nothing but fastballs during his bullpen session Thursday.

Adams watched film of himself on the mound and made necessary adjustments. He noticed he wasn't separating his hands correctly on the pitch because they weren't in the right place.

"I think we might have figured out what we were doing wrong, and I was real happy with the results of the bullpen session today and how it all turned out," Adams said.

Whenever he has command of his fastball, Adams said he doesn't worry about his off-speed pitches.

But his fastball was off during his last outing.

Adams hit a batter Tuesday during his sixth-inning appearance against the Cleveland Indians. He allowed two runs on two hits. He's scheduled to pitch Saturday against the Chicago Cubs in Las Vegas.

"Hopefully, I’ll throw again Saturday and have a lot better results with the fastball," Adams said.

He's also working on throwing his changeup on a consistent basis to compliment his fastball and breaking ball.

"There are times when one of those pitches aren’t working the way it should be, so I’m stuck with one pitch," Adams said. "It’s always good to have that other pitch there in case you need it."

Other notes:

*Pitching coach Mike Maddux said Robbie Ross will start against the Milwaukee Brewers on Sunday. He'd like Ross to go three innings on the mound during the split-squad game.

Scott Feldman will get the ball Saturday against the Arizona Diamondbacks in Surprise. Derek Holland and Matt Harrison will start against the Cubs in Las Vegas this weekend.

*Maddux liked what he saw from pitcher Neftali Feliz on Wednesday. He said Feliz had good off-speed pitches in three innings against the Colorado Rockies. He allowed a run on four hits and struck out three batters.

"The velocity is not quite there yet, but I don’t think anybody down here has their midseason velocity going," Maddux said.

*Maddux said it will be a five-man rotation after each pitcher has had three starts. The Rangers are currently on a six-man rotation with a live batting practice in between each start to build pitch counts.