Yes, those jerseys.

The same ones worn throughout Major League Baseball on Jackie Robinson Day, all with the No. 42 on the back to celebrate the legendary man who broke baseball's color barrier and had such an important impact on other lives.

Bidding is now under way exclusively at the MLB.com Auctions for an unprecedented collection of those game-used jerseys worn on April 15 -- or in later games needed for all those rainouts that happened that memorable Sunday.

All proceeds of the auction will benefit the Jackie Robinson Foundation. It was founded by Rachel Robinson in 1973 to provide education and leadership development opportunities for minority students with strong capabilities but limited financial resources, as well as Breaking Barriers, which utilizes baseball-themed activities to reinforce literacy skills, mathematics, science and social history while addressing critical issues of character development, such as conflict resolution and self-esteem.

Many fans began inquiring on April 15 about how they could get their hands on one or more of these incredible keepsakes. Now is the time, and be prepared for some competition in the bidding. The No. 42 was retired in 1997 -- the 50th anniversary of Robinson's debut with the Brooklyn Dodgers -- and only one active player, Mariano Rivera of the Yankees, still wears it in normal action.

Reds outfielder Ken Griffey Jr. is the player who approached Commissioner Bud Selig about the idea of wearing No. 42 to commemorate the 60th anniversary of that famous debut, and bidding for the jersey Junior wore himself during the April 15 game against the Cubs will begin on May 14. Because Griffey was the catalyst for that spectacular MLB-wide tribute, it stands to reason that his jersey is going to be a similarly spectacular competition among bidders here. And the higher the bids go, the more money that will go to the causes that Jackie Robinson would have wanted front and center.

Griffey actually had six No. 42 jerseys in his locker before that game, with the intention to wear each during the game. He said then that the "first" Jackie Jersey would go to Rachel. You now have a chance to own one of those.

Torii Hunter, David Ortiz and Adrian Beltre were among the early leaders in terms of highest bids for their jerseys. Just look at that dirt stain all over the front of Hunter's Twins jersey and you can see why it is even more alluring to a collector. But it's still mainly about the symbolism.

Want Tony Clark's red Diamondbacks jersey that he wore that day? All he did was jack two homers while wearing Robinson's number. And it's signed.

A few entire teams wore the Jackie Jerseys, and that included the St. Louis Cardinals. Some of those jerseys are now drawing bids and more will go on the block shortly.

"I see it as an honor to an American," Cardinals third baseman Scott Rolen said. "I don't look at it in baseball terms, necessarily. I think it's a guy that, as a person, as an American, did something great for this country. That's what I see. That to me is honorable, and I wanted to be a part of it."

The auction itself will be in a "rolling" fashion, with a batch at a time posted. So if you don't see the one you want, wait a bit and then keep an eye out for its addition. But you might not want to miss the opportunity for any of these; they are all historic pieces of apparel.

Introduced in 2004, Jackie Robinson Day was created to honor the enduring impact of Jackie Robinson and his legacy as the first African-American player in the Major Leagues.

In addition, the MLB.com Shop continues to sell authentic No. 42 jerseys for 29 clubs -- exactly like the ones that were worn on Jackie Robinson Day. Again, that lone exception is the Yankees, because No. 42 there belongs to Rivera. He was an active player before the 1997 retirement of that uniform number in Major League Baseball, so whenever he leaves the game, there will be no more 42s around.

"It's bigger than just a number," said Marlins pitcher Dontrelle Willis, who wore No. 42 against the Braves on Jackie Robinson Day. "This is American history. I might be going out on a limb, but I see so much emphasis on it the last couple of weeks about Jackie Robinson. ... He opened the doors for everybody in baseball. If it wasn't for him, there wouldn't be a lot of the great storylines you see in baseball today. I hope they continue to have that intensity to remember Jackie Robinson at all times." The auction for Willis' jersey is under way now.

No one can forget that Sunday night national celebration at Dodger Stadium, when the Dodgers' full team wore No. 42 and Rachel Robinson delivered that memorable address to a national TV audience before the game. She said then:

"It is my great hope that all of us will take this occasion to reflect on how far we've come as a nation and yet be certain that we collectively will struggle for all equal opportunities in all aspects of life."

C.C. Sabathia wore No. 42 that day, and pitched a masterful eight-inning effort to lead the Indians to a victory. After a snowout forced a rearrangement of his schedule and allowed him to start on that memorable day, he said of wearing that number: "It meant a lot. I'm just excited I got a chance to pitch. To be able to pitch and play on this day was huge." The auction for Sabathia's jersey is under way now.

Now all fans have a "huge" opportunity to wear No. 42 for themselves. The same one that those players wore to celebrate not just a baseball pioneer, but a leader in society.