But the visitor's deservedly levelled through Ivan Klasnic from the penalty spot after Fabrice Muamba was fouled.
Referee: Neil Swarbrick
Venue: The Hawthorns
West Brom scorers: Thomas 16, Long 56 Bolton scorers: Klasnic (pen) 21
TRIBAL ASKS: Bolton boss Owen Coyle must be nervously waiting for the dreaded chairman's vote of confidence. The Wanderers have now conceded 29 goals this campaign
Yellow cards: Thomas (WBA)