Derbyshire are off to an absolute flier in pursuit of 182 to beat Leicestershire. Shan Masood has smashed his way to 68 off 26 balls to take them to 87-0 in the seventh over.

Worcestershire are heading towards a heavy defeat at Northants. They're 109-7 needing a distant 221 for victory.

Essex are struggling on 38-2 in the eighth over against Hampshire. They still need 118 off 76 balls for victory.

And in the rain-reduced game at Bristol, Gloucestershire are 90-3 against Somerset with another 11 balls remaining of their 10 overs.

Luke Hollman is the next batter in. The required rate is exactly 12 per over.

It's raining. Lightly.

And two balls later Simpson does exactly that, carving another four to take Middlesex past 100.

Much-needed runs for Middlesex as new batter John Simpson pushes a four past bowler Daniel Worrall.

The hosts need plenty more shots like those.

Jamie Overton by the way has figures of 1-2 after his first over.

Wicket-taker and economical. Nice.

Kevin Hand
BBC Radio London

Eoin Morgan's Middlesex comeback doesn't last long.

There's not enough wind to help that over the short boundary.

At the halfway stage you'd say Surrey are in charge.

Middlesex need over 11 per over.

Jamie Overton is handed the ball for the first time today.

Middlesex need 118 more off 66 balls.

Just three off Worrall's over.

This game has turned on its head. Middlesex look was off Surrey's total now.

New batter Joe Cracknall is just struggling to get off strike off the bowling of Daniel Worrall.

The pressure is building.

Big appeal final ball of the over as Sunil Narine thinks he has Eoin Morgan leg before.

Nothing given by umpire Ed Pollard though.

Strong start from Chris Jordan. A wicket and seven runs come off his opening over.

Stephen Eskinazi continues his fine form with a four over the top to a vacant third man.

He's now on 47 from 20.

New batter Eoin Morgan starts with a single.