Fans in the Diamond Club behind home plate were evacuated as grounds crew members shooed the bees away with repellent, the website reported.
Cincinnati infielder Derek Dietrich -- dubbed "Derek Beetrich" in a tweet by the Reds -- lent a hand by donning an outfit that made him look like a pest control technician. Dietrich, carrying a tank of "insecticide," then pretended to fumigate the field, MLB.com reported.
After a short delay, the game began. The bees must have done the Reds some good, as Nick Senzel and Eddie Suarez stung Giants starter Drew Pomeranz by connecting for home runs in the bottom of the first inning. The Reds scored five runs bee-fore Pomeranz got out of the inning.