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8/8/2013 1:48 A.M. ET

Union files formal appeal of A-Rod's suspension

CHICAGO -- On Wednesday, the Major League Baseball Players Association filed a formal appeal of the 211-game suspension that Major League Baseball levied against Alex Rodriguez on Monday.

The suspension was to begin Thursday and last through the 2014 season, but Rodriguez will be allowed to play until the grievance has been heard by arbitrator Fredric Horowitz.

What they can't do:
Cannot receive pay
Cannot participate in Arizona Fall League
Cannot participate in Postseason games
Cannot be elected or selected to the All-Star Game (if player is suspended during the offseason, Spring Training, or championship season prior to the All-Star Game)
What they can do:
Can participate in Spring Training and extended spring training
Can participate in affiliated Winter League games
Can work out with the club
Can participate in batting practice before the gates open before a game
Can consent to an assignment to a Minor League affiliate for a period of time prescribed under Section 7.H.2 of the Joint Drug Program

The suspension is based on violations of Major League Baseball's Joint Drug Prevention and Treatment Program, as well as the Basic Agreement, stemming from Rodriguez's involvement with the Biogenesis anti-aging clinic in South Florida.

"Rodriguez's discipline under the Joint Drug Prevention and Treatment Program is based on his use and possession of numerous forms of prohibited performance-enhancing substances, including Testosterone and human growth hormone, over the course of multiple years," according to a statement by Major League Baseball. "Rodriguez's discipline under the Basic Agreement is for attempting to cover up his violations of the Program by engaging in a course of conduct intended to obstruct and frustrate the Office of the Commissioner's investigation."

Horowitz could uphold, shorten, or overturn the suspension.

Twelve other players were given 50-game suspensions for their connection to the Biogenesis clinic, and all 12 accepted the discipline.

Rodriguez had no comment on the official filing of the appeal before Wednesday's game against the White Sox, saying, "I've got no reaction to that."

"We need him to help us," Yankees manager Joe Girardi said." I don't think any of us thought that it was going to be anything different, so as far as having reactions, it's kind of what I expected. And it's part of the process negotiated between MLB and the Players Association and you let him play out, and I expect to play him a lot. We need him to help us."

Soriano adjusting to unfamiliar AL pitchers

CHICAGO -- Now that Alfonso Soriano is back in a Yankees uniform, he is finding himself having to adjust to American League pitching after spending the last 7 1/2 seasons in the National League, mostly with the Cubs.

Before Wednesday's game against the White Sox, Soriano was hitting .211 (8-for-38) with a home run and four RBIs. He launched a two-run homer in the first inning Wednesday.

The Cubs traded Soriano to the Yankees, the team he broke into the big leagues with in 1999, on July 26.

"I have to make adjustments … more to the pitchers I faced in the American League, if they're not retired," Soriano said. "[I have to adjust] more to the pitchers that are brand new [to me]. I know we played Interleague [games], but most of the [AL] pitchers, I don't know those guys, so I have to make adjustments with those pitchers."

Soriano said he relies on film of pitchers he's never faced, as well as on teammates who have been in the league for a few years and know what to look for.

"That's what I do," Soriano said. "I like to see video to get comfortable with those pitchers. I know they throw the same fastballs, sliders, [and] changeups, but, you know, I have to make adjustments to those guys. … [I talk to] Vernon Wells, I ask him [about pitchers], I talk to [Curtis] Granderson, and [Brett] Gardner, too."

Manager Joe Girardi said that while there's definitely going to be an adjustment period for Soriano, the Yankees need that period to be as short as possible given their offensive struggles.

"Some of the Interleague has given [Soriano] a little bit of history, but for the most part he's probably not had 30, 40 at-bats against certain guys and that's an adjustment that he's going to have to make really quickly for us," Girardi said.

"Maybe if I [see] a couple pitches, maybe five or six pitches, I'm more comfortable," Soriano added. "The more pitches I see, I feel more comfortable."

Bombers bits

• With one more hit Soriano will become the 16th active player to have at least 2,000 Major League hits in his career.

• Reliever David Robertson has held opposing batters hitless in their last 21 at-bats with runners on base. Robertson also has a stretch of 19 1/3 scoreless innings, the longest such stretch in a single season of his career.

Robertson has also retired the last 23 hitters he faced with the bases loaded, dating back to April 19, 2011. The last pitcher to have a longer such streak was Jeff Brantley from 1989-91 (30 consecutive batters retired).

Manny Randhawa is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.