NEW YORK -- The Yankees will not elaborate on a complication found Monday after examination of Mariano Rivera's right knee, but general manager Brian Cashman said that it is not anything that would impact the closer's ability to pitch in the 2013 season.

"I have no comment on that, but you can certainly ask Mo about that [Wednesday] when he arrives [at Yankee Stadium]," Cashman said, adding, "It doesn't affect next year at all. It doesn't affect anything about next year."

Rivera, 42, tore the anterior cruciate ligament as well as the meniscus in his right knee on Thursday at Kauffman Stadium while attempting to field a line drive in batting practice.

Rivera was seen by team physician Chris Ahmad as well as Dr. Russell Warren and Dr. David Altchek on Monday, all of whom concurred with the diagnosis of the torn ACL and meniscus given on Thursday in Kansas City.

Rivera is expected to have season-ending surgery when the swelling in his knee dissipates, which could take two to three weeks. Cashman described Rivera as being "in good spirits" but said that he is ruling out any return to the mound in 2012.

"All the reports I got, it's all about next year," Cashman said. "What he's got is correctable. At a date yet to be scheduled, they'll have surgery and fix it, he'll go through the rehab process and we'll have the player next year."

In-house bullpen sufficient for Yankees

NEW YORK -- Yankees general manager Brian Cashman said that he has made no phone calls to discuss trades for relievers in the wake of Mariano Rivera's season-ending right knee injury.

"I have no interest in going outside the organization, put it that way," Cashman said. "It doesn't mean that we won't do that at some point, but it's not something I want to do. That's certainly not something I'm doing at this stage."

The Yankees are shuffling their bullpen to have David Robertson and, to a lesser extent, Rafael Soriano soak up save opportunities in Rivera's absence.

"I'm hopeful that we have all the answers from within," Cashman said.

Cashman has also said that he does not want to move a starting pitcher like Phil Hughes into the bullpen to address the sixth or seventh innings.

Yankees' Honorary Bat Girl selected

NEW YORK -- Erika Rech has been selected as the Yankees' representative for the 2012 Honorary Bat Girl program, which recognizes baseball fans who have been affected by breast cancer and demonstrate a commitment of "Going to Bat" in the fight against the disease.

The 30 winners, one per Major League club, will be recognized on-field at ballparks on Mother's Day or an alternate date. Each winner was selected by a guest-judging panel that includes Major League players and celebrities, in addition to fan votes cast on HonoraryBatGirl.com.

Rech, a 19-year-old sophomore at the Villanova University School of Business, was just 15 when her mother was diagnosed with Stage 3 breast cancer. Six months later, her aunt was diagnosed with Stage 2 breast cancer, and a third aunt was diagnosed soon after.

In response, Rech helped start a charity -- Breast Intentions -- to assist cancer patients. Her charity has raised more than $500,000 for women in need.

During Major League Baseball's annual Mother's Day national day of recognition, Honorary Bat Girls will take part in pregame activities and receive pink MLB merchandise as well as two tickets to the game.

Bombers bits

• Yankees outfielder Brett Gardner is expected to play in a Minor League rehab game on Tuesday for Triple-A Scranton/Wilkes-Barre, playing left field. The Yankees do not anticipate he would be activated from the disabled list before Thursday.

• Yankees third baseman Eric Chavez will be scheduled to have an ImPACT test to gauge his recovery from a concussion and could be activated from the seven-day disabled list as soon as Thursday.

• On this date in 1987, Mike Pagliarulo hit a walk-off grand slam in the ninth inning against the Twins, just one of eight Yankees to accomplish the feat. On this date in 1994, Danny Tartabull, Mike Stanley and Gerald Williams hit consecutive home runs in an 8-4 win over the Red Sox. On this date in 2010, Mark Teixeira homered three times at Fenway Park, joining Lou Gehrig as the only Yankees to homer three times against the Red Sox in a single game. Gehrig did it on June 23, 1927.