PITTSBURGH -- Injured pitcher Felipe Paulino remained in Kansas City to receive further treatment on the right groin strain which forced him out of Wednesday night's game against the Twins in the first inning.

The Royals are on a four-day, three-game trip for Interleague Play against the Pirates.

"We're still evaluating. He's a little better today," Royals general manager Dayton Moore said on Thursday. "I'm keeping my fingers crossed there. He's a pretty quick healer, but we'll see."

Paulino's next start would be on Tuesday night against the Brewers, but the injury puts that in doubt. Moore said that no decision about the disabled list has been made.

"I don't know yet. I'm optimistic, but it's probably going to be about 48 hours before we get a true indication," Moore said. "We don't want to put him on the DL if he's only going to miss one start or two starts."

Manager Ned Yost said on Friday that there was "a high degree of probability" that Paulino would not make his Tuesday start. If not, Luis Mendoza will oppose the Brewers with Luke Hochevar the probable starter on Wednesday night.

Hot prospect Jake Odorizzi is 3-0 with a 2.22 ERA in five games for Omaha since being promoted from Double-A. On Thursday night, Odorizzi worked 6 2/3 innings with 10 strikeouts to beat Round Rock, 7-2, but Yost said the right-hander still has a lot to prove at Triple-A before being promoted to the Majors.

"We haven't even come close to discussing it," Yost said. "He's doing fine and he's going to be a tremendous Major League pitcher, but you can't rush these things."

The same holds true, he said, for outfielder Wil Myers, who hit a grand slam off Roy Oswalt in that game and has a .321 average, eight homers and 22 RBIs in his 21 games since joining Omaha.

Rehab stints began for three disabled Royals in the game. Catcher Salvador Perez was 2-for-4 as the designated hitter, second baseman Chris Getz was 1-for-2 with a walk and starting pitcher Everett Teaford gave up one run and two hits in two innings. He was relieved by Odorizzi.

Greinke scheduled to face off vs. Royals

PITTSBURGH -- The matchup that Royals fans have been anticipating apparently is going to happen. Zack Greinke is Milwaukee's probable starting pitcher for Tuesday night's Interleague game at Kauffman Stadium.

Greinke pitched seven innings in Wednesday's 8-0 Brewers win over the Cubs with 12 strikeouts and just two hits. Milwaukee fans are delighted with the trade that brought Greinke from the Royals, because he's posted a 15-0 record with a 2.47 ERA at Miller Park since his arrival. And the Brewers are 20-1 in games he's started in their home park.

Now, of course, he'll be returning to familiar ground. At Kauffman Stadium in his Royals years, Greinke had a 36-28 record and a 3.54 ERA in 108 games.

The right-hander's record on the road in his two years with the Brewers should provide Royals fans with more hopeful statistics -- Greinke's 8-8 with a 5.05 ERA in 19 starts.

Royals manager Ned Yost is well aware of Greinke's dominance at Miller Park.

"I'm just glad we're not facing him there," Yost said.

Robinson impressed by Major League digs

PITTSBURGH -- Count Clint Robinson, getting his first taste of the Major Leagues after five-plus years in the Minors, as impressed.

Robinson was called up to join the Kansas City club from Triple-A Omaha where, among other things, getting up at 4 a.m. to catch commercial flights and staying in budget accommodations is routine. With the Royals, it's a charter flight to Pittsburgh, a first-class hotel downtown and an upscale clubhouse at picturesque PNC Park.

"That's why they call it the big leagues," Robinson said. "There's nothing minor about 'em."

In anticipation of his Major League debut, his wife Samantha, his dad Arney Robinson, mom and stepfather Tommy and Laurie Sanders, and brother Connor Robinson were in the stands for Friday night's game.

Robinson, a 6-foot-5 first baseman and designated hitter, was wearing uniform No. 25 and manager Ned Yost said he expected to keep him around for the coming Interleague series against Milwaukee, St. Louis and Houston.

The latter two series are on the road in National League cities where pitchers hit and pinch-hitters are used more often.

Despite Robinson's impressive numbers in the Minors, his progress has been blocked because Eric Hosmer is established at first base and Billy Butler as the DH.

"He goes about it the right way," Yost said. "He doesn't complain, he keeps playing hard every day."

Yost called Robinson off the bench to pinch-hit for Humberto Quintero in the ninth inning on Friday night with the Royals trailing, 4-2, and Pirates closer Joel Hanrahan on the mound. His debut came as the Royals were down to their last out and 36,069 fans at PNC Park were thunderously chanting, "Let's go, Bucs!"

Robinson struck out swinging on three pitches.

"That's baseball," Robinson said. "I wouldn't want to be anywhere but right there. If you're going to be in this league, you've got to go through things like that and experience things like that. I relish those kinds of things. I wanted to be up at the plate at that time and I'm glad [Yost] gave me the opportunity. Hanrahan got the better of me that time and next time I'll try to get the better of him."

Royals stay busy signing Draft selections

PITTSBURGH -- The list of players signed by the Royals from the 2012 First-Year Player Draft is growing. As of Friday afternoon, there were 19 of their 40 selections under contract.

Joining the first-round pick, right-hander Kyle Zimmer of the University of San Francisco, were third-rounder Colin Rodgers, a left-handed pitcher from Parkview Baptist High School in Baton Rouge, La.; fifth-rounder Chad Johnson, a catcher from Galesburg (Ill.) High, and sixth-rounder Zachary Lovvorn, a right-handed pitcher from Oxford (Ala.) High. All of them were among the first 200 players selected by Major League clubs.

The Royals also have signed:

• Round 7 -- Outfielder Fred Ford, Jefferson (Mo.) Community College.

• Round 8 -- Outfielder Alfredo Escalera-Maldonado, Pendleton School in Bradenton, Fla.

• Round 9 -- Left-handed pitcher Daniel Stumpf, San Jacinto North (Tex.) Community College.

• Round 10 -- Outfielder Alexis Rivera, Montverde (Fla.) Academy.

• Round 11 -- Right-handed pitcher Zebulon Sneed, Northwest Nazarene University.

• Round 13 -- Left-handed pitcher Hunter Haynes, Mexico (Mo.) High.

• Round 14 -- Catcher Parker Morin, University of Utah.

• Round 15 -- Left-handed pitcher Dylan Sons, Halifax County (Va.) High.

• Round 17 -- Outfielder Ariel Estades, Puerto Rico Baseball Academy.

• Round 19 -- Right-handed pitcher Andrew Triggs, University of Southern California.

• Round 20 -- Right-handed pitcher Shane Halley, University of Virginia.

• Round 21 -- Left-handed pitcher Matthew Strahm, Neosho County (Kan.) Community College.

• Round 24 -- Catcher Beau Maggi, Arizona State University.

• Round 25 -- Left-handed pitcher Matthew Tenuta, Apex (N.C.) High.

• Round 32 -- Left-handed pitcher Patrick Conroy, Marin (Calif.) Community College.