Ross Whiteley took 2-30 on the second day at Derby. Here, he bowls while closely watched by Northants' O'Brien who scored 62

David Wainwright traps Alex Wakeley LBW to secure his first wicket for Derbyshire following his winter move from Yorkshire

David Wainwright is congratulated after taking his first wicket at Derby on Friday

Niall O'Brien is dismissed LBW by Ross Whiteley at Derby on Friday

O'Brien is disconsolate; Whiteley jumps for joy - Whiteley has just trapped the Northant's batsmen LBW

Northants' David Willey is struck on the pads and falls LBW to Mark Footitt at Derby on Friday