The Hampshire-based official is yet to take charge of a Blues game this season but he has taken charge of one Leeds fixture this term.
The Leeds game that Rob Styles refereed was in their 1-0 away defeat at Crystal Palace on 13 August. Former Blues striker Geoff Horsfield was sent off for Leeds on that day and Gary Kelly and Mat Kilgallon picked up yellow cards.
In total Rob Styles has taken charge of 22 games so far this season in which he has handed out 78 yellow cards and 7 reds.
S Artis and R Pollock will be Rob Styles' assistants for the game at St Andrew's on Saturday afternoon.
For a detailed head-to-head between the two sides, click here