 Barrow was the first executive to put numbers on player uniforms . He also announced the retirement of Lou Gehrig 's uniform number , the first number to be retired . Barrow was also the first executive to allow fans to keep foul balls that entered the stands . Barrow was also the first to require the playing of " The Star @-@ Spangled Banner " , the United States ' national anthem , before every game , not only on holidays . 
 Barrow was the first executive to put numbers on player uniforms . He also announced the retirement of Lou Gehrig <a href='null_genetive' title='1'><mark>'s</mark></a>uniform number , the first number to be retired . Barrow was also the first executive to allow fans to keep foul balls <a href='null_relcl' title='2'><mark>that</mark></a>entered the stands . Barrow was also the first to require the playing of " The Star @-@ Spangled Banner " , the United States <a href='null_genetive' title='3'><mark>'</mark></a>national anthem , before every game , not only on holidays . 
Barrow was the first executive to put numbers on player uniforms . He also announced da retirement of Lou Gehrig  uniform number , the first number to be retired . Barrow was also the first executive to allow fans to keep foul balls entered tdastands . Barrow was also the first to require thdalayin of " The Star @-@ Spangled Banner " , the United States  national anthem , before every game , not only on holidays .