The Blues went into the contest off the back of a 2-1 defeat to Norwich City, while the Baggies were one of three sides who had won their opening two games of the season.
The hosts started strongly taking the lead through Mikey Johnston, before Colby Bishop equalised in the second period to share the points.
There were 2,473 Blues supporters who made the trip to the Hawthorns and made themselves in the sold-out away-end at the Hawthorns.
Check out our fantastic fan photos and match action from our photographer Manjit Narotra.
9. West Brom 1-1 Pompey: Fan gallery
There were 2,473 Blues supporters who made the trip to the Hawthorns on Saturday as Pompey secured a 1-1 draw against West Brom. | Manjit Narotra/ProSportsImages
10. Match Action
Match action from Pompey's 1-1 draw against West Brom. | Manjit Narotra/ProSportsImages
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11. West Brom 1-1 Pompey: Fan gallery
There were 2,473 Blues supporters who made the trip to the Hawthorns on Saturday as Pompey secured a 1-1 draw against West Brom. | Manjit Narotra/ProSportsImages
12. West Brom 1-1 Pompey: Fan gallery
There were 2,473 Blues supporters who made the trip to the Hawthorns on Saturday as Pompey secured a 1-1 draw against West Brom. | Manjit Narotra/ProSportsImages