The golfer and his ex-wife turned up to a local youth sports event to support their son, Charlie, on the baseball diamond.
According to People, the reunion was "cordial", but short lived, with the pair speeding off in Elin's car after an hour to avoid attention.
So are things afoot between Tiger and Elin? Highly unlikely. One of Tiger's close friends told People "He's not getting back with Elin. That's never going to happen. They are co-parenting the children. Like any other mature adults, they have set aside their differences and are striving to be the best parents they can possibly be."
Since the divorce, Tiger's been linked to pro skier Lindsey Vonn, while Elin split with businessman Jamie Dingman a year back.