Although FCSB are capable goalscorers, they only progressed to the current stage of the competition because of a late winner, and they could struggle to find the back of the net again on Tuesday.
Additionally, if Sparta's strong performances against Shamrock Rovers are anything to go by, then the hosts could come into the second leg with a sizeable advantage.
Read more.
Data Analysis
Our analysis of all available data, including recent performances and player stats up until an hour before kickoff, suggested the most likely outcome of this match was a win with a probability of 45.15%. A win for had a probability of 29.81% and a draw had a probability of 25%.
The most likely scoreline for a win was 1-0 with a probability of 9.75%. The next most likely scorelines for that outcome were 2-1 (9.2%) and 2-0 (7.57%). The likeliest win was 0-1 (7.63%), while for a drawn scoreline it was 1-1 (11.84%).