 Burkhart officiated in eight no-hitters overall, then one short of the record for NL umpires, but did not work behind the plate for any of them.He was, however, behind the plate on July 12, when brothers Tommie and Hank Aaron both hit home runs in the ninth inning to propel the Milwaukee Braves to an 8–6 win, with Hank's grand slam winning the contest.Burkhart was involved in the most controversial play of the 1970 World Series when the Cincinnati Reds were batting against the Baltimore Orioles with one out and the score tied at three in the sixth inning of Game 1.