"He just looks free and easy," said Hale, who has watched tape of Pollock's rehab games. "I saw him steal a base, saw him run a ball down in the gap. Swinging, he's been fine the whole time."
Pollock is hitting .433 (13-for-30) with a pair of homers in 10 rehab games between Reno, Class A Advanced Visalia and the Arizona Rookie League. He went 4-for-8 with four RBIs in his first two games at Triple-A on Saturday and Sunday.
When Pollock returns to the Majors, it'll be his first time with the D-backs this season. He fractured his right elbow in an exhibition game on April 1.
• Catcher/outfielder Chris Herrmann (right hamstring strain) said he is scheduled to resume his rehab assignment on Thursday. He played just one game in the Arizona Rookie League on Aug. 15 before he felt some discomfort, which paused his rehab.
Herrmann is unsure whether he will go back to the AZL or play for Reno.
"It's feeling a lot better now, so hopefully this time around it'll be ready to go," Herrmann said. "Hopefully I'll be ready to go in September. That's when they really want me to start playing again."
• Hale hasn't said whether right-hander Shelby Miller's next start will be with the D-backs. Miller struggled earlier this season, leading to a demotion to Triple-A Reno on July 14.
He is 5-1 with a 3.52 ERA in seven starts since being sent down and was 2-9 with a 7.14 ERA in 14 outings for the D-backs prior to that.
Hale has said Miller will return to the Majors this season, but the team has not yet decided when that will be.
Jake Rill is a reporter for MLB.com based in Phoenix. This story was not subject to the approval of Major League Baseball or its clubs.