New Zealand test batsman Kane Williamson hit a fine, if controversial 189 to put Yorkshire in charge of their county championship game against Sussex in Scarborough.
Williamson appeared to be caught at second slip by England one-day international James Tredwell off left-arm seamer Lewis Hatchett on 16. The umpires were unsure if the catch carried, and Williamson, after initially starting to walk to the pavilion, turned back and waited for the decision.
The umpires, Graham Lloyd and Peter Hartley, conferred. Sussex were adamant the catch was a fair one.
Williamson, by gesture, indicated he wasn't sure. Eventually he was allowed to carry on.
When he reached his century it was greeted with sarcastic applause by Sussex fielders.