CHICAGO -- Astros first baseman Carlos Lee is doing more every day to return to the club from the 15-day disabled list.

After hitting in the batting cages on Saturday, Lee hit on the field and took ground balls before Sunday's game.

"He's feeling really good," manager Brad Mills said. "He ran in the pool yesterday. We're going to think about getting him outside today and running. I don't know exactly where they are with that."

Lee strained his left hamstring running to first base on June 1 and went on the disabled list on June 3. He said he'll continue to listen to the trainers' advice, and he'll be eligible to return to the team in a week.

Johnson feeling better; Schafer has pink eye

CHICAGO -- Astros third baseman Chris Johnson's ailment seems to be passing, while center fielder Jordan Schafer's is getting worse.

Johnson was back in the lineup for Sunday's game after leaving in the sixth inning on Friday with nausea. Schafer, who also hadn't been in the lineup since Friday, remained on the bench after showing up to the clubhouse with pink eye on Sunday morning.

"[Schafer] texted me in the morning and said he's feeling pretty good," Astros manager Brad Mills said. "Then he came in and was hacking all over as he walked through the door."

Mills said the trainers came running to him when they noticed how pink Schafer's eye was.

"With that situation, we just said, 'Hey, let's not push this," Mills said. "Not a cloud in the sky today, it's not really a good day to have eye problems."

Johnson said he wasn't feeling well before Friday's series opener, and the sickness reached its peak midway through the game. He said he's still not 100 percent, but he felt better yesterday and he's progressively getting healthier.

Mills has juggled the lineup to adjust for sicknesses and injuries throughout the series. He welcomed Johnson's bat back in the order.

"It's probably the sicknesses that have been the toughest thing," Mills said. "We didn't have a lineup until real late this morning. We had to wait to see how CJ was and how [Schafer] was coming in."

Worth noting

• The Astros acquired outfielder D'Andre Toney from the Royals as the player to be named later in the March 20 trade that sent outfielder Jason Bourgeois and catcher Humberto Quintero to Kansas City.

Toney, a 14th-round pick in the 2011 First-Year Player Draft, hit .340 with 12 doubles, five triples and five home runs in the Rookie-level Arizona league last year. He'll report to the Astros' Rookie-level affiliate in Greeneville.

• Reliever Fernando Abad is scheduled to pitch an inning at Triple-A Oklahoma City on Sunday. He's been on the disabled list since May 26 with a right intercostal strain.