Shadow Nation (Sioux nation) was certainly on the betting public's radar heading into his career opener at Santa Anita on Sunday, and he did not disappoint when he came screaming from off the pace to score by open lengths in a 'TDN Rising Star, presented by Hagyard'-earning performance.Shadow Nation was allowed to linger in fourth in the early going of the five-furlong turf test, several lengths behind the speedy Repo (Nyquist) who cut out an initial quarter in :22.11. When asked the question by Joel Rosario, it didn't take long for the 3-5 choice to catch the pace setter down on the inside and quickly drew away from his rivals to graduate by a confident margin. Nylie (Nyquist) was second while Repo held third. 1st-Santa Anita, $69,400, Msw, 5-31, 2yo, 5fT, :58.80, fm, 6 1/2 lengths.SHADOW NATION (IRE) (c, 2, Sioux Nation–Tooralooraloo {Ire}, by Dylan Thomas {Ire}) Lifetime Record: 1-1-0-0, $39,000. O-Slugo Racing, Tiger Racing, Inc. and Warren, Craig; B-Cottage Bloodstock (IRE); T-Mike Puype. *€42,000 Ylg '25 TATIRY.Click for the Equibase.com chart or VIDEO, sponsored by FanDuel TV. The post Sioux Nation’s Shadow Nation Rolls to Rising Star Score at Santa Anita appeared first on TDN | Thoroughbred Daily News | Horse Racing News, Results and Video | Thoroughbred Breeding and Auctions.