 Like later superstar Shaquille O 'Neal , Chamberlain was a target of criticism because of his poor free throw shooting , an abysmal .511 career average , with a low of .380 over the 1967 – 68 season . Countless suggestions were offered ; he shot them underhanded , one @-@ handed , two @-@ handed , from the side of the circle , from well behind the line , and even banked in . Sixers coach Alex Hannum once suggested he shoot his famous fadeaway jumper as a free throw , but Chamberlain feared drawing more attention to his one great failing . Despite his foul line woes , Chamberlain set the NBA record ( 28 ) for free throws made in a regular season game in his 1962 100 @-@ point game . 
