Some fascinating clashes feature among the seven races at Aintree on the first day of the Grand National meeting on Thursday, not least in the Betway Bowl in which the dual King George winner Clan Des Obeaux, takes on Native River and Waiting Patiently along with a certain Tiger Roll.

That looks like a race to savour, along with a likely battle between Adagio and Monmiral in the Doom Bar Anniversary 4-Y-O Juvenile Hurdle and a very tight-looking Betway Aintree Hurdle over two-and-a-half miles in which the uncertain stayer Silver Streak is top-rated ahead of six others on the same official mark.