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7/29/2014 8:34 P.M. ET

Adames called up from Colorado Springs

CHICAGO -- The Rockies will reach double figures in players making their Major League debut when infielder Cristhian Adames, called up on Tuesday from Triple-A Colorado Springs, enters a game.

The switch-hitting Adames, who turned 23 on Saturday, spent much of his early Minor League career as a shortstop before increasing his workload at second and third this season. He batted .276 with two home runs and 37 RBIs in 84 games for at Double-A Tulsa before hitting .273 with three RBIs in nine games at Colorado Springs.

The Rockies needed someone capable of playing short, second and third, as Josh Rutledge missed his second straight game on Tuesday because of an upper respiratory infection. The illness is not related to the severe flu that sidelined him for 10 games and led to him being optioned to Colorado Springs earlier this season.

Charlie Culberson made his second straight start at short on Tuesday against the Cubs.

The need for a middle infielder and the activation of starting first baseman Justin Morneau from the disabled list meant an unlucky demotion to Colorado Springs for Ben Paulsen. Paulsen went 10-for-22 with four doubles and two RBIs in seven games filling for Morneau.

"It's not like Ben played his way out of here," manager Walt Weiss said. "As a matter of fact, it's just the opposite. He opened some eyes with his performance and his poise. It's a tough situation. We're just in a bind right now with Rut being sick."

Adames began the season looking to gain comfort away from short, and he worked on his swing from the left side and on his situational hitting.

"I know a lot of players here, so I feel comfortable," Adames said.

In Spring Training, Adames hit .217 with two RBIs.

In other roster news, the Rockies activated lefty Boone Logan from the disabled list after his recovery from diverticulitis, and optioned right-handed relievers Chad Bettis and Brooks Brown to Colorado Springs.

Neck improved, Morneau returns to Rockies

CHICAGO -- Justin Morneau's neck might not be better than ever, but it's better than it's been at any point this season, and the Rockies activated him from the 15-day disabled list and inserted him into the lineup on Tuesday, a day after he went 2-for-4 in a rehab assignment for Triple-A Colorado Springs.

Morneau wasted no time making an impact, hitting a two-run double off Chicago starter Edwin Jackson in the first inning.

Morneau's start on Tuesday against the Cubs also comes a day after an MRI gave him some peace of mind. In 2011, while with the Twins, he underwent surgery to remove a herniated disk fragment and often deals with strains and stiffness, so anything involving his neck is a concern.

"That was good news to see that in some ways my spine is actually better," said Morneau prior to his first game since before the All-Star break. "Hopefully, it continues to get better."

Morneau went 2-for-4 against Round Rock on Monday and tested his neck and body in a variety of ways.

"It was a real test," said Morneau, who is batting .312 with 13 home runs and 60 RBIs. "I hit the ball well and came back well. I ran around and came back good. Batting practice is one thing, when you're hitting fastballs, but when you get in games and see offspeed pitches, that's when you know."

Logan activated from disabled list

CHICAGO -- Diverticulitis -- a digestive ailment -- forced left-hander Boone Logan to the 15-day disabled list after the All-Star break. It also robbed him of some fun.

"I had to eat super-healthy," Logan said. "No tobacco, no alcohol, no caffeine, no gluten, no spicy foods -- no life."

But Logan was allowed to have fun on Tuesday, when the Rockies activated him prior to the game against the Cubs at Wrigley Field.

Both Logan and first baseman Justin Morneau (neck strain) were activated. In addition, infielder Cristhian Adames was recalled from Triple-A Colorado Springs and at some point will make his Major League debut.

To create roster space, the Rockies optioned right-handed relievers Chad Bettis and Brooks Brown, and first baseman Ben Paulsen to Colorado Springs.

Thomas Harding is a reporter for MLB.com. Read his blog, Hardball in the Rockies, and follow him on Twitter @harding_at_mlb. This story was not subject to the approval of Major League Baseball or its clubs.