1) 7th house is the secondary house of high energy and aptitude which is to be considered for this profession.
2 ) 2nd and 3rd house are the principal houses for race caller 2nd house signifying speech and 3rd house is communication .
3 ) Well posited karaka of the 2nd house and mars the planet of energy are necessary , to give running commentary for the ongoing race events .
4 ) In general tenth house lord play important role in career .
5 ) Interconnection of benefic 2nd or 3rd house in anyway will help one to perform very well as commentator or sports caster .
6) Jupiter and moon are the primary planets .Well posited Jupiter and its interlinks with 10th house or 10th lord give success and proficiency at the career front .Well disposed moon signifying good speech and stable mind will give good communication skills and also it helps to become successful