Grady has arguably been Baggies player of the season so far but hadn’t featured for a month after suffering a similar hamstring injury in mid-December. He spent 27 days out of action only returning from injury on 11th January playing 20 minutes in 2-2 draw against Charlton.
This was his first start since his injury and he was due to play the full ninety minutes tonight.
Last week a report suggested that Slaven Bilic was about to offer David Moyes an extra £1.5m loan fee to keep Diangana for the remainder of the season with another potential £3m loan fee for next season.
West Brom remains top of the Championship table just one point ahead of second-placed Leeds with Fulham, Brentford, Nottingham Forrest and Swansea in the chasing pack