Rubuta ci gaba don wannan sakin layi - Whitecross ya yi gasa a cikin babban wasan kwaikwayo a Australia Open sau shida, ba tare da yin shi ba bayan zagaye na farko. Mafi kusa da ya zo shi ne a 1982 Australian Open lokacin da ya rasa Damir Keretić a cikin saiti biyar, bayan da ya yi ikirarin biyu na farko. Ya kuma bayyana aƙalla sau ɗaya a sauran manyan wasannin Grand Slam guda uku, yana wasa a US Open na 1980 (Víctor Pecci ya doke shi), Gasar Wimbledon ta 1980 (a cikin maza biyu), Gasar Wimbledon ta 1982 (wanda Eddie Edwards ya rasa), Gasar Wimbledon ta 1984
(a cikin gauraye biyu), da kuma 1984 Faransa Open (a cikin maza biyu).