The John Smith's Aintree Hurdle has been moved to Thursday from its traditional Saturday slot to become the highlight on the first day of the Grand National meeting.
Prize-money has also been increased by £40,000 to £200,000 for the race which has been won by Oscar Whisky for the last two years.
"We are confident that this switch will greatly strengthen Thursday's card and thereby provide a big additional star attraction on the opening day," said Aintree clerk of the course Andrew Tulloch.
Moving in the opposite direction is the three-mile Grade One John Smith's Liverpool Hurdle, which will now be the third race on Grand National day, with prize-money increased by £20,000 to £120,000.
The John Smith's Melling Chase has been boosted to the tune of £25,000 and now stands at £200,000, while the Topham Chase over the National fences has gone up £20,000 to £120,000.
The closing date for entries for the 2013 John Smith's Grand National is noon on January 29, with the weights due to be unveiled on February 12.
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