Before heading onto the field wearing their own #42 jerseys, members of each Major League Baseball team autographed replica jerseys last month during Jackie Robinson Day.

Those shirts are now being sold at auction to benefit the Jackie Robinson Foundation.

The auction went online last week and closes this Sunday, when MLB teams will do their part again by putting pink game-used items on the field and later selling them to benefit the Susan G. Komen Foundation.

Top bid thus far on the Robinson jerseys stands at $2525 for the St. Louis Cardinals model which is signed by Albert Pujols, Matt Holliday and coach Mark McGwire, among others.  Chris Carpenter and Adam Wainwright's autographs are not being touted in the listing, so it's possible the two star pitchers were not available on the day the jersey  was passed around for autographs.

The Atlanta Braves Robinson jersey stood at $1001 as of late Thursday, with the Philadelphia Phillies model (no Halladay?) was at $875.

The Robinson jersey auction is the first major MLB auction event of the season.  Baseball uses its auction platform to raise money for various causes throughout the year.

You can see the jerseys here.

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5. MLB Opens Robinson Day Jersey Auction