Donaldson grew up an Atlanta Braves fan. Aside from playing baseball, Donaldson has also been a lifelong avid golfer. When he was 18 months old he appeared on a local TV station showing off a "picture perfect" golf swing. He appeared on the Golf Channel during the 2014 season and hit a ball an estimated 309 yards in a simulator. He found out he was traded to the Toronto Blue Jays while watching the Golf Channel, as well as playing Mortal Kombat.
