"I'm good, I'm good to go," Lamb said. "I've been telling them that for like a week now, but I understand the process. I'm good to go."
In 10 games this season, Lamb batted .414 with a homer and nine RBIs. During his rehab assignment with Triple-A Reno, Lamb was 4-for-11 with a pair of RBIs in three games.
Lamb said his defense was the biggest thing he needed to work on during the rehab stint, adjusting his footwork and making sure there was still no pain in his foot. He missed seven weeks as the injury sidelined him longer than expected.
Lamb said he still felt pain in his foot after wearing a protective boot for two weeks, which slowed the recovery process.
"You've got to take these things slow, that was the only frustrating part," Lamb said. "There's been no pain in the foot, now it's just been kind of getting back into baseball shape."
D-backs manager Chip Hale said initially Lamb would get a day off after playing two or three games in a row.
"We'll try to match it up best with who we're facing pitching-wise," Hale said. "We're really, really, really open at this point if there's any feeling in the feet. Right now he said his only deal is he's just a little sore from playing, but not his feet. His foot is just perfect right now."
To make room for Lamb on the 25-man roster, the D-backs designated utility player/third catcher Jordan Pacheco for assignment. Pacheco was batting .242 with two homers and eight RBIs in 29 games for the D-backs this season.
Hale said Pacheco would be a strong consideration to be back in the Majors later this season, should he clear waivers and remain in the organization.
"We'd love to him back," Hale said. "As a manager, he's great for me because he gives me such flexibility during the game, his ability to catch. He did a great job for us."