|Specsavers County Championship Division Two, The 3aaa County Ground, Derby, day four|
|Essex 530-9 dec: Browne 229*; Milnes 6-93|
|Derbyshire 165 & 303 (f/o): Godleman 100; Napier 4-50, Bopara 3-39|
|Essex (23pts) beat Derbyshire (1pt) by an innings and 62 runs|
Essex strengthened their position at the top of Division Two by beating Derbyshire by an innings and 62 runs.
Derbyshire were bowled out for 303 in their second innings at Derby.
Essex began day four needing five more wickets for victory and Ravi Bopara (3-39) removed Callum Parkinson and Alex Mellor in the opening over.
Charlie MacDonell (35 not out) and Matt Critchley (43) resisted with an eighth-wicket stand of 72 but Graham Napier (4-50) wrapped up the win before lunch.
Napier's haul made him the first bowler to take 50 wickets in the County Championship this season.
It is the first time the 36-year-old, who is retiring at the end of the season, has reached the milestone.