MLB on Twitter: "The @Pirates and @Cardinals are wearing Negro Leagues throwbacks of the Pittsburgh Crawfords and the St. Louis Stars tonight. 👏 https://t.co/qNWQbKSo6w" / Twitter
![Pittsburgh Pirates Pedro Alvarez tosses his bat and walks to first base forcing in Andrew McCutchen to score in the fourth inning of the New York Mets 5-3 win at PNC Park Pittsburgh Pirates Pedro Alvarez tosses his bat and walks to first base forcing in Andrew McCutchen to score in the fourth inning of the New York Mets 5-3 win at PNC Park](https://c8.alamy.com/comp/W02EJW/pittsburgh-pirates-pedro-alvarez-tosses-his-bat-and-walks-to-first-base-forcing-in-andrew-mccutchen-to-score-in-the-fourth-inning-of-the-new-york-mets-5-3-win-at-pnc-park-in-pittsburgh-on-june-28-2014-the-pirates-wore-throwback-uniforms-honoring-the-crawford-grays-and-the-mets-the-uniform-of-the-royal-blues-upiarchie-carpenter-W02EJW.jpg)
Pittsburgh Pirates Pedro Alvarez tosses his bat and walks to first base forcing in Andrew McCutchen to score in the fourth inning of the New York Mets 5-3 win at PNC Park
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