Millwall have won five of their last six home league clashes with Leeds United (L1).
Leeds have conceded two or more goals in four of those aforementioned six games, keeping one clean sheet.
Millwall have won just one of their last 10 league games played on the opening day (D5 L4).
Leeds have won 11 of their last 14 opening day fixtures, losing twice (D1).
Millwall conceded 19 headed goals last season, a league-high.
Leeds United were the only side in the Championship not to concede from the penalty spot last season.
The Lions used 40 different players in 2013/14, the most in the division.
Millwall's last five league goals against the Whites have all come in the second half.
Ian Holloway's side have won just once in their last 10 home league games (D6 L3), though this victory did arrive on the final day of last season (1-0 versus Bournemouth).
Leeds won their final two away games of 2013/14; they've not won three in a row since November 2011.