High-class older horse White Birch (GB) (Ulysses {Ire}) is set to miss the remainder of the season due to a hock injury, it was announced on Monday. Trained by John Murphy, White Birch kicked off the campaign in the best possible fashion with three straight wins at the Curragh, notably gaining his first success at the top level when last seen beating Auguste Rodin by three lengths in the Tattersalls Gold Cup in May. That performance identified him as potentially a leading player for the major middle-distance prizes during the summer,...