In the match between Kecmanovich and Etcheverry at the Australian Open tournament, I recommend betting on Etcheverry to win with a -4.5 game handicap. The Argentine player is showing consistent form and a high level of play, which has allowed him to defeat opponents. Meanwhile, Kecmanovich is not achieving such impressive results and may struggle in the match. Taking this into account, I believe that Etcheverry will be able to win with a comfortable margin, covering the -4.5 game handicap.