The sports world is mourning the death of MLB legend Willie Mays ... with tributes flooding social media honoring the life and legacy of "The Say Hey Kid."
Former president Barack Obama was among the high-profile names who paid their respects to Willie ... with No. 44 saying No. 24 was "a wonderfully warm and generous person -- and an inspiration to an entire generation."
Barry Bonds -- Mays' godson and a Giants legend in his own right -- took to Instagram and posted an emotional tribute to the legend.