By JON NEWCOMBE

PREVIEW...
Sale Sharks v Harlequins
Today. Kick-off 3pm, AJ Bell Stadium
SUCCESSFUL Grand National punter Alex Sanderson knows victory against Harlequins today is vital if his team are going to last the distance in the most competitive play-off race in history.
Sanderson, below, hedged his bets on a team outing to Aintree last Saturday, making 13 selections from the field of 34 horses and coming up with the winner I Am Maximus. A blanket approach could easily apply to the Premiership, too, as any one of eight teams can still walk away with the silverware.
Only s...