Actually, Dane beat Brydan down in Australia in March this year in the Mildura Futures. Dane won 6-3 6-3
But Brydan beat Dane in Turkey in september 2013
Propoggia's won two of the last three encounters, but Klein actually leads the head-to-head (Challengers & Futures) by 5-3 (going back to 2010). My stupid fault for forgetting that the top of the head-to-head page on the ATP site covers only the main tour, the Grand Slam events & the Davis Cup. Should've scrolled down...