Благодаря своим успехам в спорте он

Благодаря своим успехам в спорте он закончил университет.

Результаты (английский) 1:

Thanks to his success in the sport, he graduated from the University.

Результаты (английский) 2:

Thanks to its success in the sport, he graduated from the University.

Результаты (английский) 3:

Thanks to their success in the sport, he had graduated from university.