Duckworth won 3-6, 6-4, 6-4 over Emil Ruusuvuori
in the first round of Sofia on Wednesday.
After a runner-up finish last week in Nur-Sultan, Duckworth picked up another solid win as he came from behind to win a three-set battle that spanned two hours and 24 minutes. The 29-year-old Australian looks to be a late bloomer, as his current ranking of No. 56 marks a career high. He also recently won a Challenger title in Istanbul.