Reading and Cardiff have recorded the second straight goalless draw of the English football Championship playoffs.
The advantage should be with the two Welsh sides fighting for a place in the Premier League now, with both Cardiff and Swansea hosting the decisive second legs.
10-man Swansea also managed a 0-0 draw in the opening playoffs match at Nottingham Forest on Friday morning.
Cardiff may have to make do without injured captain Craig Bellamy however - the on-loan Manchester City striker lasted just 17 minutes before going off injured with a hamstring injury.