Another time I choose the underdogs are when playing with similar underdogs too, for example club at 18th and 20th position in the league table, I mostly go for the one playing at home to either win or draw, and it's been working well for me.
Wait, I don’t get it, how can both teams be the underdog? Isn’t it in betting there’s always a favorite and an underdog? And if it’s a 50-50 matchup, the line should at least be even or have just a slight difference. No way both sides get underdog odds as that would mean the bookies are just giving away money, which we know won’t happen.