Taking on a handful of practice races saw Blaklion winning the Brightwells Bloodstock Geldings Maiden at Tinahely, finish third in the Enter Brightwells Cheltenham December Sale Maiden at Lingstown, fourth in the Goffs Bloodstock Sales Maiden at Durrow, and fifth in the DBS Hennessy Sale at Ballinaboola. The mixed results didn’t give Nigel Twiston-Davies a lot to go by, but he felt that Blaklion was ready to compete at the next level, winning the Glyn Abbey Standard Open National Hunt Flat Race at Ffos Las, the Haydock Park Races Standard Open National Hunt Flat Race at Haydock, the Pipe And Piling Supplies Day Novices’ Hurdle at Perth, and the Totepool Persian War Novices’ Hurdle at Chepstow.
Achieving five wins in succession showed a lot of promise for Blaklion but he was met with his first major defeat at Cheltenham’s November Meeting, finishing at a respectable second in the Neptune Investment Management Novices’ Hurdle. He was able to make up for the shortcoming in winning the Albert Bartlett Novices’ Hurdle at Cheltenham a month later, but it was disappointing to see a third-place finish in the Betfred Goals Galore Challow Novices’ Hurdle at Newbury, a second-place finish in the Albert Bartlett Novices’ Hurdle at Doncaster, and a failure to finish in the Albert Bartlett Novices’ Hurdle at Cheltenham Festival.
Two fourth place finishes in the Doom Bar Sefton Novices’ Hurdle at Aintree and The Robert Mottram Memorial Trophy at Chepstow showed even more disappointment, not helped by falling in the next entry into Cheltenham during the Mallard Jewellers Novices’ Chase. When all hope was lost, Blaklion responded in winning the Harrison James And Hardie Novices’ Chase and the RSA Chase at Cheltenham, as well as the Totepool Towton Novices’ Chase at Wetherby. A variety of second, third, and fourth-place finishes occurred at Wetherby, Newbury, and Haydock, up until 2017, where Blaklion won the Randox Health Becher Handicap Chase at Aintree. This was followed by a second-place finish in the Betfred Grand National Trial Handicap Chase at Haydock, and failures to complete runs in the 2018 Aintree Grand National, and the Bet365 Gold Cup Handicap Chase at Sandown.