Baseball Record
Apr 9 1st game at Astrodome, Houston beats Yankees 2-1 in exhibition as Mickey Mantle hits 1st indoor homerun

Mickey Mantle
US Masters Golf
Apr 11 29th US Masters Tournament, Augusta National GC: Jack Nicklaus wins the 2nd of his 6 Masters titles with a tournament record 271 (−17); beats Gary Player and Arnold Palmer by a record 9 strokes