Dick Stuart, who hit an estimated 500-foot homer over the left field scoreboard in Pittsburgh, has a rival in Roberto Clemente. The Puerto Rican outfielder of the Pirates made the Cubs sit up and take notice when he drilled a homer off southpaw Bill Henry in Chicago in the May 17 nightcap that left Wrigley Field via the left-center corner of the bleachers. Wrigley Field observers rated it at probably 500 feet. Rogers Hornsby, the Cubs batting coach, said it was the longest he ever witnessed and [manager] Bob Scheffing agreed it was No. 1 in his book.