Yorkshire's last two wickets had put on 94 this morning to swell their total to 282 all out in answer to the visitors' poor opening effort of 157. Then Silverwood removed Sussex's Rajesh Rao, Neil Taylor, Keith Newell and Peter Moores.
Dominic Cork picked up a warning for bowling short-pitched deliveries during the second day of Derbyshire's rain-affected match against Leicestershire at Grace Road.
Cork, who had a hernia operation earlier in the season, managed only 1 for 120 off his 25 overs, sent down 14 no balls and was warned by the umpire, John Hampshire, for bowling two successive short-pitched deliveries at Gordon Parsons. Leicestershire's veteran all-rounder did not seem to be unduly worried, going on to reach an unbeaten 69.
Leicestershire made 486 and reduced the visitors to 48 for 1 off nine overs in mid-afternoon when the rain began to fall.
The best of the Derbyshire bowling came from their captain, Phil DeFreitas, who finished with 5 for 120 off 41 overs. Three of his wickets came when he tried a spell of off-spin bowling.Reuse content