An Ishikawa diagram is a diagram that shows the causes of an event and is often used in manufacturing and product development.

Yoane Wissa scores late in the second half as Brentford and Arsenal play out a drab draw that leaves the second-placed Gunners 10 points behind Premier League leaders Liverpool.

Crystal Palace and Nottingham Forest play out a competitive Premier League draw at Selhurst Park before a backdrop of fan needle and managerial uncertainty.

Portsmouth draw 1-1 with West Bromwich Albion to deny them a third league win, as Baggies boss Ryan Mason is sent off.