Chris Nash fell short of his first century of the season as Sussex held out for a County Championship Division draw with Nottinghamshire at Hove.
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Opener Nash hit a season-best 86 as the hosts took 12 points to their opponents' 13 after ending the match 198 for two in their second innings.
England seamer Stuart Broad denied Nash the fourth century of an absorbing match, Chris Read taking the catch behind the stumps.
Nottinghamshire duo Samit Patel and Alex Hales and Sussex's Ed Joyce all fired 150-plus innings across the four-day contest, but Nash was unable to follow suit.
Luke Wells and Nash produced a 161-run opening stand in Sussex's second innings that ultimately saw the game peter out into a draw.
After the final morning was washed out, the duo eventually resumed with Sussex 29 for none.
Nottinghamshire had built a commanding 404-run lead by the close of play on day three, Hales' howitzer 167 from 133 balls teeing up what could have been an intriguing final-day battle.
Instead rain and the inactivity of the pitch allowed the hosts to coast to the draw, with Wells reaching 73 before being clean bowled by Broad.
Rory Hamilton-Brown made an unbeaten 12 and Matt Prior was in the groove with 19 when the teams called the draw with an hour's technical play remaining.
Broad's two for 31 in 12 overs proved far more incisive and frugal than his colleagues but as with the rest of the clash, the batsmen were in the ascendancy.