In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

On April 15 , 1997 , Robinson 's jersey number , 42 , was retired throughout Major League Baseball , the first time any jersey number had been retired throughout one of the four major American sports leagues .
On April 15 , 1997 , Robinson 's jersey number , 42 , was retired by Major League Baseball .