Australian Marnus Labuschagne scored his third hundred of the season as Glamorgan continued their impressive fightback on a rain-shortened day of their Specsavers County Championship division two match against Sussex.

Just 21 overs were possible on the third day at Hove before rain arrived with Glamorgan 218-1 in their second innings – still 16 behind – with Labuschagne 131 not out.

Labuschagne, has already made 121 against Northamptonshire and 137 against Gloucestershire during his stint as Glamorgan’s overseas player and the 24-year-old has not offered a chance here on a pitch which has flattened out since 15 wickets fell on the first day.

Opener Nick Selman, who carried his bat in the first innings, has so far helped Labuschagne add 218 with the Glamorgan record for the second wicket against Sussex of 238, set in 1962 by Alan Jones and Tony Lewis at Hastings, now in their sights.

They resumed on 137-1 with Labuschagne quickly adding the 23 runs needed to lodge his seventh first-class hundred.

Sussex skipper Ben Brown rung the changes, using six bowlers in the 80 minutes of play before the rain arrived but neither batsman looked troubled by either the four seamers or two spinners he employed.

Selman was happy to accumulate patiently as the partnership grew. When they came off he had faced 174 balls for his 64 with eight fours while Labuschagne has hit 22 boundaries from 190 deliveries so far. They added 81 runs in 21 overs before going off.

The rain intensified during the afternoon and after two inspections umpires Paul Baldwin and David Millns abandoned play for the day at 5pm.

Glamorgan still trail by 16 runs but will fancy their chances of avoiding defeat now with a day to go and maintaining their unbeaten start to the Championship campaign.