An interesting final day lies in store at Derby after Middlesex closed with a precarious lead of 12 at 53-2.

Greg Smith hit his maiden first-class ton, sharing 91 with Chris Rogers, but Alan Richardson took three wickets in 15 balls as the innings ended on 347.

South African Smith, due to qualify as English before the end of the season, reached 100 with his 12th four but was taken at slip to spark a mini-collapse.

Smith then bowled his off-spinners and trapped Ed Joyce with his eighth ball.