McCovey is best remembered for the ferocity of his line drive batting style. In his book "Ball Four", pitcher Jim Bouton wrote about watching the slugger blast the ball in batting practice, while making "little whimpering animal sounds" in response to each of McCovey's raw power drives. Reds manager Sparky Anderson also had a healthy respect for the damage McCovey could do, saying "I walked Willie McCovey so many times, he could have walked to the moon on all those walks." Announcer Jack Buck thought a McCovey line-drive home run to centerfield was the hardest ball he had ever seen anyone hit. McCovey's bat was so lethal in his prime he was intentionally walked an all-time record 45 times in 1969, shattering the previous record by a dozen. This remained the major league mark for 33 years until broken by fellow Giant Barry Bonds. The following year McCovey was intentionally walked 40 times. Once, speaking to the pitcher before a McCovey at-bat, Mets inimitable manager Casey Stengel joked, "Where do you want to pitch him, upper deck or lower deck?"