The Northern Ireland international, who has 19 goals to his name this season, was a big doubt for Good Friday's trip to Yeovil but made an earlier than expected to return to start from the off at Huish Park.
Grigg lasted 78 minutes of the goalless draw and boss Dean Smith, who is not expected to be have any other injury or suspension concerns, will be hoping he is fresh enough to line up once more against the Sky Blues.
New loan signing Romaine Sawyers appeared for the closing stages against the Glovers and will be aiming for a bigger role on Easter Monday as the Saddlers strive to stretch their 11-match unbeaten run.
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- Romaine Sawyers