Sussex and Glamorgan had to settle for a draw in the battle of the top two in Division Two of the LV=County Championship.
Glamorgan were bowled out for 210 on the final afternoon of the fixture at Hove following an inspired spell by Luke Wright that saw him take 4-24.
The Welsh county were indebted to a knock of 76 from Tom Maynard for pushing them well ahead after Yasir Arafat had struck two early blows.
Maynard hit some superb shots off the back foot as he put on 69 in 13 overs with Ben Wright (25) and then a further 47 with Mark Wallace before becoming one of Wright's victims after lunch.
Left needing 261 to win from 45 overs, Sussex were soon forced to settle for a draw when they lost Chris Nash and Ben Brown, both batsmen falling to seamer Huw Waters.
Murray Goodwin finished with an unbeaten 58 and Ed Joyce was 24 not out as the home side reached 93-2 by the time the players shook hands at 5pm. Sussex now sit 19 points clear of their opponents in the table with two games to go - they are 41 in front of third-placed Worcestershire.
Glamorgan claimed a first-innings lead of 50 after bowling out Sussex for 250 on the third day of their top-of-the-table Division Two fixture at Hove.
Seam bowlers James Harris (3-37) and Huw Waters (3-71) each picked up three wickets for the visitors as Sussex, who resumed on 30-0, wasted a good start.
Opener Ed Joyce (56) and number three Ben Brown (59) both hit half-centuries but from a position of 111-1, the hosts lost wickets regularly and were all out during the afternoon session.
Rain, which wiped out the entire first day's play, meant only a further 16 overs were possible, during which time Glamorgan reached 37-1 in their second innings to boost their overall advantage to 87.
Opening batsman Mark Cosgrove hit a quickfire century as Glamorgan posted 300-9 on day two of their clash with promotion rivals Sussex at Hove.
The powerful Australian smashed 142 off 177 balls as the Welsh county made solid progress on the south coast.
Only Will Bragg (44) offered any significant support to Cosgrove, who found the rope 25 times during his innings.
James Anyon (3-52) was the pick of the Sussex attack, who failed to stop the Dragons collecting three bonus points.
A swift declaration followed by Glamorgan stand-in captain Dean Cosker, however Sussex survived a tricky session before stumps to end the day on 30-0.
Promotion-chasing Sussex and Glamorgan were frustrated by the rain which washed out the first day of their LV= County Championship Division Two match at Hove.
Morning rain finally stopped at midday but umpires Peter Willey and Barry Dudleston decided at 3.30pm, after three inspections, that parts of the outfield were too damp for play.
Leaders Sussex went into the game 20 points clear of second-placed Glamorgan and closing in on an immediate return to Division One.