Protonico (3, c, Giant’s Causeway/Alpha Spirit) is entered in the Grade 1 Clark Handicap at Churchill Downs on Friday. Last seen out winning the G3 Discovery Handicap at Aqueduct, Protonico will face 8 others in the race. He currently has 4 wins in 7 lifetime starts and earnings of $389,715.  He was bred in Kentucky by International Equities Holding, Inc. and races for Sumaya U.S. Stable.