Subjective Examination:

Insidious onset, usually related to increased load
Usually felt in one or both pubic bones and adductors but can be centred on the lower abdominal or inguinal regions.
Pain presents following activity and is accompanied by stiffness
It is important to establish the patients full training history where possible
May describe a history of recurrent adductor strains
Objective Examination:

Localised medially in the groin, may radiate down the adductor muscle
There will be pain on passive stretching
Pain on palpation of the adductor tendon insertion
Pain on resisted adduction (squeeze test)
Weakness is also common
Early signs to look out for:

Tightness/stiffness during or after activity with little relief from stretching
Loss of acceleration when running
Loss of max sprinting speed
Loss of long distance kicking when running
Vague discomfort with deceleration