The Nottinghamshire wicketkeeper Chris Read was involved in a confrontation on the boundary with Mushtaq Ahmed after the Sussex leg-spinner dismissed him for a duck, leg before wicket, in the County Championship First Division match at Hove.
Read, one of six victims for the former Pakistan Test bowler, reappeared to confront Mushtaq from behind the rope on the third man boundary, and was eventually ushered away by his team-mate David Hussey and a Sussex steward.
Read was believed to have become annoyed at the spinner's constant appealing. He issued an apology later in the day and said: "It was totally out of character and will not happen again."
The umpires Graham Burgess and Rob Bailey met with Read and Mushtaq afterwards and they will report to the England and Wales Cricket Board.
Nottinghamshire closed the second day in a strong position with Sussex only 25 ahead having reached 111 for 3 in their second innings.
The hosts, 86 behind on first innings, got off to a reasonable start with Richard Montgomerie and Carl Hopkinson sharing an opening stand of 68. But the spinner Graeme Swann had Montgomerie caught at slip, and Mike Yardy chased a wide one from Mark Ealham to be caught behind before Murray Goodwin fell to a return catch by A J Harris.
The uncapped Hopkinson battled hard to reach 55 by stumps, his half-century arriving from 121 balls with three fours.
Nottinghamshire, bowled out for 229 in reply to Sussex's 143, slumped to 152 for 7 by lunch and were indebted to a brave ninth-wicket stand of 68 between Ealham (52) and Ryan Sidebottom (21) for their valuable lead.
Darren Lehmann led the fightback for Yorkshire against Kent at Canterbury, guiding the visitors to 312 for 5. The left-handed Australian, unbeaten on 176 from 299 balls, had brought about a complete recovery with a record fifth-wicket stand of 229 in 71 overs with Craig White after the top order failed to make an impression.Reuse content