|LV County Championship Division One, Hove|
|Close of play, day three: Sussex 290 and 147-0, Lancashire 590|
|Lancashire 8pts, Sussex 4pts|
Glen Chapple and Gary Keedy took four wickets each as Lancashire forced Sussex to follow on at Hove.
But Sussex then battled back, openers Ed Joyce (63no) and Chris Nash (57no) both making half centuries.
Earlier, Murray Goodwin, who hit 113 out of his side's first innings total of 290, was the only man to hold up the visitors' bid for a third straight win.
But it was a different story second time around as Sussex reached 147-0 to cut the deficit to 153 by the close.
Having won their first two County Championship matches by an innings, early season leaders Lancashire could still claim a third.
But Sussex's revival in the final session suggests that a draw is now the most likely outcome.
CLOSE OF PLAY SUMMARIES
BBC Radio Lancashire's Liam Bradford:
"Gary Keedy pushed through the 600 first-class wickets barrier, the other veteran Glen Chapple took four too and it looked as though experience was going to win the match for Lancashire.
"But, on a flat and even pitch, no amount of experience could help out Lancashire second time around against the Sussex openers.
"Three options remain. First, Sussex bat it out for the draw. Second, Lancashire find 10 wickets out of a flat pitch. Third, and in my opinion most likely, the notorious Lancastrian luck with the weather strikes again and this game gets washed out."
BBC Radio 5 live's Kevin Howells:
"So often at Hove I've seen this happen. Following on miles behind and somehow a side saves the game.
"Reason why Sussex can in this match? Clear belief and application as shown by the close of play score, plus a bit of forecast rain.
"Reasons why not? Chapple never gives up, even on pitches flat like this. And Sussex know Keedy will be dangerous throughout using the rough.
"A fascinating final day to come."