Orient go Peterborough today, with the home side 13-10 to win - the same price for Preston to take a first-leg lead over Rotherham in the other semi-final.
Preston are the 9-4 favourites for promotion, while Rotherham are 5-2 with Orient 11-4 and Peterborough 3-1.
But I would be sorely tempted to stick 50p on an Orient victory. They have been so impressive all season, only falling out of the race for automatic promotion a couple of weeks ago, and will undoubtedly be on a nice bonus from Mr Hearn should they be promoted.
There is the only merest flicker of hope for Liverpool in the market for the Premier League title, with Manchester City at odds of 1-6 to beat West Ham tomorrow. City are 1-50 to win the title, with Liverpool 12-1.
Still, Brendan Rodgers will be preying for a slip-up, and order his men on all-out attack against Newcastle. They are 2-9 for the win.