Irish horse Altior is reportedly not going to be able to participate in the Clarence House Chase at Ascot on Saturday this weekend. The 6-year old horse has so far registered 9 wins in 11 runs with a win rate of 81.82%. Altior’s last win came recently at Kempton on Boxing day, winning by a margin of 13 lengths. The Clarence House Chase has been a Grade 1 race for horses five years or older. Inaugurated in 2013, the race distance is about 2 miles and 1 furlong, and with the cold weather around in Great Britain right now, trainer Nicky Henderson is more than hesitant to let the successful Altior participate in the race and risk any injuries. Only nine horses including Altior had registered for the Clarence House Chase including Willie Mullins’ Tingle Creek Chase winner Un De Sceaux who has just won the Grade One a year ago. 2014 winner Sire De Grugy and 2015 winner Dodging Bullets are also among the participants. Altior is currently the second favourite among the bookmakers behind Un De Sceaux, but as per usual Nicky Henderson says it is very unlikely to see Altior participate in the Chase. Nicky confirmed that Altior is doing alright, but due to plenty of cold weather and a tough schedule ahead it is likely that the Irish horse might be rested. Nicky also mentioned how Altior has been doing things the right way so far and believes that his jumping is only getting slicker with time. Altior is likely to bring Nicky a third career win in the festival opening Supreme Novice’s Hurdle in March. Altior is a strong favourite to win the Arkle Trophy at the Cheltenham Festival. Altior and Nicky Henderson were restricted from winning in the Clarence House by a distance of five lengths.