Dinesh Chandimal's unbeaten half-century and persistent rain in Galle delayed Australia's push for victory in the opening test against Sri Lanka on Friday.
Only a 27-over session was possible on day three with Sri Lanka losing two wickets and slumping to 136-5 before rain stopped play.
Chandimal was batting on 63 with Kusal Mendis on 10 at the other end.
Sri Lanka are still 518 runs behind and will need a Herculean effort to avoid the follow-on even though more rain is forecast for Saturday.
Australia seized control of the contest after declaring their first innings on a mammoth 654-6 and made a couple of inroads when play resumed on Friday.
Kamindu Mendis (15) fell to a wayward delivery from Mitchell Starc, which the batter tickled down the leg side to be caught behind.
Dhananjaya de Silva (22) also threw away his wicket as the Sri Lanka captain came dancing down the track against left-arm spinner Matthew Kuhnemann only to miss the ball.
Australia wicketkeeper Alex Carey had all the time in the world to collect the ball and whip off the bails.
Chandimal hit Nathan Lyon for three fours in an over and has looked comfortable.
New Zealand overcame a blitz from centurion Harry Brook to beat England by four wickets on Sunday in the opening game of their three-match one-day international series, with Daryl Mitchell and Michael Bracewell scoring half-centuries.
Belinda Bencic breezed past Czech sixth seed Linda Noskova 6-2 6-3 to win the Pan Pacific Open title on Sunday, erasing bitter memories of her straight-sets defeat by Agnieszka Radwanska in the title clash of the same tournament 10 years ago.
Liverpool manager Arne Slot said opponents have identified a winning strategy against his Premier League champions and he needs to find a solution fast after a 3-2 defeat at Brentford on Saturday made it four league losses in a row.
Rohit Sharma hit a century and Virat Kohli a bright 74 to drive India to a nine-wicket win in the third one-day international on Saturday, sending fans home happy after what are likely to be their final appearances in Australia in their country's colours.