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5/3/2014 10:55 P.M. ET

Sale operating without a timetable

CLEVELAND -- Chris Sale played long toss with bullpen catcher Adam Ricks prior to Saturday's contest against the Tribe, looking as if he got out to 120 feet during the session. As manager Robin Ventura mentioned Friday, the plan is for Sale to throw a bullpen on Monday at Wrigley Field.

Pitching coach Don Cooper described the White Sox bullpen sessions as light, medium and heavy, and Sale's would fall under the light classification. As for his schedule after Monday's session, the next step will be decided by Sale's reaction to Monday.

"Nobody has made a plan like, 'He'll do this on Monday, this on Tuesday, this on Wednesday and follow through the week,'" said Cooper of the White Sox ace, who was placed on the disabled list retroactive to April 18 with a flexor muscle strain in his left arm. "We are going day by day and [we'll] see what we [get], and then we'll deal with it as we go.

"We are taking the time because it's smart to do that. We did it last year and we aren't going to do anything until he's physically ready to do it. We are taking it day by day is what we are doing. Nothing is going to make us move faster. He's coming along, so it looks like he's going to be back on the mound on Monday for a light one."

De Los Santos sent down after one-game stint

CLEVELAND -- Frank De Los Santos' stint with the White Sox lasted one night, as the left-handed reliever who was recalled from Triple-A Charlotte before the game was sent back to Charlotte after Saturday's 2-0 loss to the Indians.

The White Sox went with 13 pitchers on Saturday night, with De Los Santos replacing Adam Eaton on the active roster when Eaton was placed on the disabled list due to a right hamstring strain.

A corresponding move will be made by the White Sox prior to Sunday's series finale.

"De Los Santos was up here to give us some insurance," White Sox manager Robin Ventura said. "It will be a [position] player. We are a little short players."

That new bench player figures to be Moises Sierra, as the White Sox also claimed the 25-year-old outfielder off of waivers from Toronto Saturday. Sierra was designated for assignment by the Blue Jays on May 1 after going 2-for-34 (.059) with two RBIs and two runs scored over 13 games this season. The 6-foot-1, 220-pound Sierra batted .290 in 107 at-bats with 13 doubles, a triple, home run, 13 RBIs and 11 runs scored over 35 games in '13. He hit .315 (23-for-73) with 10 RBIs vs. right-handers and .429 (9-for-21) with runners in scoring position.

Sierra also hit .317 (26-for-82) with 12 doubles, a homer and 11 RBIs over 25 games in September last season. He ranked among the American League September leaders in doubles (third), extra-base hits (tied for fourth, 14), slugging percentage (eighth, .524) and on-base percentage (ninth, .385). He has appeared in 74 games (66 starts) in right field and four (three starts) in left over his career.

Infielder/outfielder Leury Garcia, backup catcher Adrian Nieto and first baseman Paul Konerko represented the White Sox bench for Saturday's contest.

Timing was everything with Chipper's scouting report

CLEVELAND -- A Twitter account known as @DugoutLegends recently ran an old scouting report from Oct. 23, 1990, on baseball great Chipper Jones, filled out by former White Sox scout Alex Cosmidis.

The report was especially interesting because it seemed to miss on the analysis of this potential Hall of Famer, grading him overall at a 50/C and adding notes such as "displayed nonchalant attitude at times," "he was a disappointment to me" and "showed slap type swing from (left) side."

Jones, of course, went on to become one of the most prolific switch-hitters in the history of the game, retiring after 19 years, 468 homers and 2,726 hits. But as pointed out by White Sox senior director of baseball operations Dan Fabian, who worked closely with and admires Cosmidis, timing is everything.

This report was filled out during Instructional League action in 1990. It came at the end of Jones' first professional season with the GCL Braves, where he hit .229 with one homer and 18 RBIs, and arguably was a bit worn down after being selected No. 1 overall in the First-Year Player Draft. In 1991 with Macon, Jones hit .326 with 15 homers, 98 RBIs, 40 stolen bases and a .407 on-base percentage.

So Jones' Instructional League performance was a bit of an anomaly.

"We cover [Instructional League], but more as a heads up to see these guys next year," Fabian said. "It's more for me to know these are guys we need to have our scouts see.

"It's not real baseball. The lights aren't on. Guys are there working on stuff. As an example, some of our guys that are there will throw nothing but fastballs and changeups."

This defense from Fabian aims solely to support Cosmidis, who was named East Coast Scout of the Year at the 2009 Winter Meetings. The recently retired Cosmidis worked well into his 80s, as a Major League scout since 1982 and with the White Sox since 1987. In the same year of this report, Cosmidis signed James Baldwin and Ray Durham, who went on to become All-Stars with the White Sox.

"He was a stitch in the meetings, because he would tell us that a player reminds him of Whitey Ford or Jim Bunning," said Fabian of Cosmidis, who was signed by the White Sox as a player in '50 and spent eight seasons as a Minor League manager. "He is one of those guys that was fun to talk to -- a baseball lifer in the game, 50 or 60 years."

Gillaspie set to begin rehab assignment

CLEVELAND -- Conor Gillaspie begins a rehab assignment with Triple-A Charlotte Sunday in Buffalo and will play two more games with the Knights at home on Monday and Tuesday. The plan is for Gillaspie to return to the White Sox for Wednesday's game at U.S. Cellular Field against the Cubs, barring any setbacks.

Gillaspie went on the disabled list retroactive to April 22 with a left hand contusion. He tested the injury swinging the bat on Friday, but needs to take that test another level higher in game action.

"I haven't actually tested it in a game, but there's only one way to find out," Gillaspie said. "At least the pain is gone, and [I'm] doing everyday things, where it started bothering me a lot, just opening doors and things like that.

"If I rested it, I kind of figured that it would be better than trying to press through it and being miserable for a month or two. Hopefully, everything goes OK and I can get back out there and play."

Third to first

• Erik Johnson was impressive in his Charlotte debut Friday, striking out six over six scoreless innings and walking just one. But it sounds as if Johnson will have at least one more Minor League start before getting a chance to return to the White Sox.

"I would say there's probably another one there for him to make sure he can keep that confidence going and do that two times in a row," Ventura said. "Then you start seeing where he's at, and we'll see where we're at."

• Double-A Birmingham dropped a 5-3 game to Mobile on Friday in a game that lasted 17 innings and 5 hours, 25 minutes. Birmingham pitchers fanned 17, while Mobile struck out 16. Micah Johnson finished 3-for-8 in the game, raising his average to .364, while Jeff Keppinger, in his first rehab start, finished 2-for-4.

Alexei Ramirez ranks among the AL leaders in batting average with two strikes (first, .359), two outs (tied for second, .394) and RISP/two outs (12th, .417) entering play Saturday.

Scott Merkin is a reporter for MLB.com. Read his blog, Merk's Works, and follow him on Twitter @scottmerkin. This story was not subject to the approval of Major League Baseball or its clubs.